trying to do a search for a mod done by I think diesel boy for a terrano auto transmission mod that involved attaching a switch to some wires in the engine bay that gives a 4th gear ??sort of.
Cant find it did it years ago but the wiring was removed and i cant sort it out anyone know where the info is>?
Diesel Boys old terrano lock up solenoid mod
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grytvikken
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Re: Diesel Boys old terrano lock up solenoid mod
This is copied from a Word Doc I have when the original post was made.
How's this:
Do you hate the way lock up works on your auto box??
All ways in and out at a certain speed etc?
Well i just got my whole tranny rebuilt, new everything ($$$$$$ I’m broke now)
I still had the lock up problem that was really starting to make me hate the whole vehicle!!!!
So I rang the place that did the rebuild and asked about a trick I had heard of.
The trick was to put the lock up solenoid on a manual switch, that would allow it to work as normal, then flick the switch and it wouldn't come in at all.
What i found out was that it was a five minute job, that required a simple accessory on/off switch, some speaker wire and a soldering iron or connector block.
Mount the switch in the cab somewhere convenient, run the wires through to the engine bay on the battery side.
Between the battery and the firewall there should be a loom with a reddish brown plug. Once you have found that plug, find the only blue wire in the plug, cut it, solder the switch to the two cut ends and there you have it, a manual lock up switch.
Simple huh.
Photos to follow................
Cheers,
Pete.
Think of a manual. 1,2,3,4,5 gears.
Your auto has 1,2,D and over drive.
In over drive you have two stages. The first is overdrive. The second stage is lock up. That means the torque convertor (thing that takes the drive from the engine to the gear box, in place of the clutch in a manual)
has its own special clutch that is operated by the computer.
Just quickly, there is always a loss of power in the torque convertor due to it being a fluid coupling, about 90% power transfer is its best apparently.
The lock up clutch stops this loss of power by locking the two parts of the torque convertor together.
The problem is that you have no control over it. And it can be a real pain at certain speeds and in certain situations. Like you want to pull out to pass, so you put your foot down, it either struggles away in 5th (lock up) or drops to 3rd and screams, when all you needed was 4th (overdrive). Same on hills.
By doing this simple mod you can control what it does a lot better.
Basically it allows you to control 5th gear.
(why didn't i just say that in the first place?)
Sound good???????
An interesting thing is that after a bit of testing it seems that it plays tricks on the computer, and you have to switch off and reset to get lock up again.
As far as I can tell, if you have lock up switched off, then kick down, the next time you shift to overdrive you can't get lock up. Just means you have to use the hold switch so you don't accidentally kick down!!!
Difficult getting a good photo of the plug in place!!
Tried to pull the plug of so I could get a photo of the wire but it wasn't going to let me!!!
Right. An in depth discussion of how the modification performs.
In most ways it does exactly what I wanted it to do.
You drive completely as normal with the lock up switched on. That’s good in its self as you haven't lost anything by doing it.
If you then turn the lock up off, you get 1 - D plus over drive. That’s good as well. Makes climbing hills a lot quicker!!! And winding roads through gorges a lot smoother!!
You have lock up switched off, then you hit a nice fast piece of road, flick lock back on and you can cruise. Want to pass? Turn lock up off and boot it!!
This is where it gets tricky. I usually use the hold switch on hills and when overtaking to stop it kicking down to 3rd and revving (being a diesel revs = noise and almost zero acceleration). Instead using the hold switch you can floor the bitch and it’ll use all that wonderful torque. That’s were being able to get O.D without lock up is so great. You can really make her work, without having to make her rev, which is how you drive a diesel.
Before I put the lock up switch in you could use the hold switch and between 60 and 100km/h it would stay in O.D, flicking out of lock up as you dropped past 80 mark, but only if you had the pedal down passed the point where it actuates the kick down switch. As soon as you crept over 80 it would lock up again, then your speed would reduce again because the gear was too high for the hill, drop back past 80 and come out of lock up. And so on and so on.
SOOOO, with this switch you can click hold, click lock up off, floor it and fly up the same hill at 120km/h. I was amazed; my partner asked what could SHE do to make me grin like that.
After a bit of messing around while driving on long trips, I noticed that if you have lock up switched of and kick down for whatever reason, the next time you go to turn lock up back on it isn't there. For some reason the computer reads an error and disables it. Fair enough. It’s all back to normal next time you start the vehicle.
This is how I use it now:
Normal driving leave lock up switched on.
As lock up is only a pain in the ass in situations like I mentioned before, where I would normally be using the hold switch, I now still use hold but can control what the computer does with lock up.
I also keep the lock up off all the time when running the Centipedes, they really affect the gearing!!!
I have yet to ring up the Trans shop to see if there is a way round this kick down thing. I doubt it though.
The switch has no bearing on any of the normal functions on the trans other than this little trick it plays for the unwary!!
Cheers,
Pete.
First of all, the torque converter can be looked at as being two separate halves, one coupled to the engine and the other to the gear box.
The two halves are connect by the transmission fluid, which transfers the spinning motion generated by the rotation of the crank shaft in the engine through to the half connected to the gear box.
When lock up occurs, a clutch locks the two halves of the torque convertor together, making a direct mechanical link from the engine to the gear box.
By doing this, the loss of power created by the fluid coupling is eliminated.
This operation is all that the switch controls. When the lock up clutch engages, and when it switches off.
Lock up only occurred on mine when in over drive.
The switch I’m referring to, on mine, had three positions, Hold, A/T and Power.
Hold prevented the Kick down of gears, when you put your foot to the floor, a switch on the accelerator pedal tells the trans comp to drop a gear. The Hold switch prevents this from occurring, so that the only time the box will change gear will be in relation to speed and engine revs, and you moving the stick.
How's this:
Do you hate the way lock up works on your auto box??
All ways in and out at a certain speed etc?
Well i just got my whole tranny rebuilt, new everything ($$$$$$ I’m broke now)
I still had the lock up problem that was really starting to make me hate the whole vehicle!!!!
So I rang the place that did the rebuild and asked about a trick I had heard of.
The trick was to put the lock up solenoid on a manual switch, that would allow it to work as normal, then flick the switch and it wouldn't come in at all.
What i found out was that it was a five minute job, that required a simple accessory on/off switch, some speaker wire and a soldering iron or connector block.
Mount the switch in the cab somewhere convenient, run the wires through to the engine bay on the battery side.
Between the battery and the firewall there should be a loom with a reddish brown plug. Once you have found that plug, find the only blue wire in the plug, cut it, solder the switch to the two cut ends and there you have it, a manual lock up switch.
Simple huh.
Photos to follow................
Cheers,
Pete.
Think of a manual. 1,2,3,4,5 gears.
Your auto has 1,2,D and over drive.
In over drive you have two stages. The first is overdrive. The second stage is lock up. That means the torque convertor (thing that takes the drive from the engine to the gear box, in place of the clutch in a manual)
has its own special clutch that is operated by the computer.
Just quickly, there is always a loss of power in the torque convertor due to it being a fluid coupling, about 90% power transfer is its best apparently.
The lock up clutch stops this loss of power by locking the two parts of the torque convertor together.
The problem is that you have no control over it. And it can be a real pain at certain speeds and in certain situations. Like you want to pull out to pass, so you put your foot down, it either struggles away in 5th (lock up) or drops to 3rd and screams, when all you needed was 4th (overdrive). Same on hills.
By doing this simple mod you can control what it does a lot better.
Basically it allows you to control 5th gear.
(why didn't i just say that in the first place?)
Sound good???????
An interesting thing is that after a bit of testing it seems that it plays tricks on the computer, and you have to switch off and reset to get lock up again.
As far as I can tell, if you have lock up switched off, then kick down, the next time you shift to overdrive you can't get lock up. Just means you have to use the hold switch so you don't accidentally kick down!!!
Difficult getting a good photo of the plug in place!!
Tried to pull the plug of so I could get a photo of the wire but it wasn't going to let me!!!
Right. An in depth discussion of how the modification performs.
In most ways it does exactly what I wanted it to do.
You drive completely as normal with the lock up switched on. That’s good in its self as you haven't lost anything by doing it.
If you then turn the lock up off, you get 1 - D plus over drive. That’s good as well. Makes climbing hills a lot quicker!!! And winding roads through gorges a lot smoother!!
You have lock up switched off, then you hit a nice fast piece of road, flick lock back on and you can cruise. Want to pass? Turn lock up off and boot it!!
This is where it gets tricky. I usually use the hold switch on hills and when overtaking to stop it kicking down to 3rd and revving (being a diesel revs = noise and almost zero acceleration). Instead using the hold switch you can floor the bitch and it’ll use all that wonderful torque. That’s were being able to get O.D without lock up is so great. You can really make her work, without having to make her rev, which is how you drive a diesel.
Before I put the lock up switch in you could use the hold switch and between 60 and 100km/h it would stay in O.D, flicking out of lock up as you dropped past 80 mark, but only if you had the pedal down passed the point where it actuates the kick down switch. As soon as you crept over 80 it would lock up again, then your speed would reduce again because the gear was too high for the hill, drop back past 80 and come out of lock up. And so on and so on.
SOOOO, with this switch you can click hold, click lock up off, floor it and fly up the same hill at 120km/h. I was amazed; my partner asked what could SHE do to make me grin like that.
After a bit of messing around while driving on long trips, I noticed that if you have lock up switched of and kick down for whatever reason, the next time you go to turn lock up back on it isn't there. For some reason the computer reads an error and disables it. Fair enough. It’s all back to normal next time you start the vehicle.
This is how I use it now:
Normal driving leave lock up switched on.
As lock up is only a pain in the ass in situations like I mentioned before, where I would normally be using the hold switch, I now still use hold but can control what the computer does with lock up.
I also keep the lock up off all the time when running the Centipedes, they really affect the gearing!!!
I have yet to ring up the Trans shop to see if there is a way round this kick down thing. I doubt it though.
The switch has no bearing on any of the normal functions on the trans other than this little trick it plays for the unwary!!
Cheers,
Pete.
First of all, the torque converter can be looked at as being two separate halves, one coupled to the engine and the other to the gear box.
The two halves are connect by the transmission fluid, which transfers the spinning motion generated by the rotation of the crank shaft in the engine through to the half connected to the gear box.
When lock up occurs, a clutch locks the two halves of the torque convertor together, making a direct mechanical link from the engine to the gear box.
By doing this, the loss of power created by the fluid coupling is eliminated.
This operation is all that the switch controls. When the lock up clutch engages, and when it switches off.
Lock up only occurred on mine when in over drive.
The switch I’m referring to, on mine, had three positions, Hold, A/T and Power.
Hold prevented the Kick down of gears, when you put your foot to the floor, a switch on the accelerator pedal tells the trans comp to drop a gear. The Hold switch prevents this from occurring, so that the only time the box will change gear will be in relation to speed and engine revs, and you moving the stick.
Ok people, move along. Nothing to see here. Thank you, move along.
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grytvikken
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Re: Diesel Boys old terrano lock up solenoid mod
Thanks mate much appreciated
Re: Diesel Boys old terrano lock up solenoid mod
Can send you the doc with pictures if you need it, just PM me your email addy.
Ok people, move along. Nothing to see here. Thank you, move along.
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travis2ninja
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Re: Diesel Boys old terrano lock up solenoid mod
So this only works in 4th (with the overdrive switch in the "On" position)?
It allows you to use 4th without the torque converter locking up?
And is that the right wire in the picture i have taken?
It allows you to use 4th without the torque converter locking up?
And is that the right wire in the picture i have taken?
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The Stranger
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Re: Diesel Boys old terrano lock up solenoid mod
travis2ninja wrote:So this only works in 4th (with the overdrive switch in the "On" position)?
It allows you to use 4th without the torque converter locking up?
And is that the right wire in the picture i have taken?
1) Yes
2) Yes - but be aware that this loads the TC and generates a lot of heat. (I have an oil temp gauge on my trans)
3) Looks right - but as just broke my leg I can't go and check ATM- it's certainly the lower connector.
I have taken the wire from the trans to the centre pin on a 3 position switch such that I can supply a current to the trans and thus lock the TC at any time.
Position one is normal, postion two is as you describe above, position 3 locks the trans. If you do this you should ensure that you don't just supply 12v to the computer - not sure what will happen if you do, but the computer doesn't usually output 12v on this wire.
This is excellent for towing. I can select any gear manually and lock the TC. This means that hills that were giving me 110c + trans oil temps when towing now give me 80c temps and fuel efficiency is allso greatly improved - even just locking it top on an open road trip yields better fuel efficiency.
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travis2ninja
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Re: Diesel Boys old terrano lock up solenoid mod
I wired up the switch and it works great!
Just a few more questions.
Is it fine to lock the Torque converter in any gear?
Also what is the voltage to supply to lock at anytime?
Im very new to cars
Just a few more questions.
Is it fine to lock the Torque converter in any gear?
Also what is the voltage to supply to lock at anytime?
Im very new to cars
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Re: Diesel Boys old terrano lock up solenoid mod
I have taken the wire from the trans to the centre pin on a 3 position switch such that I can supply a current to the trans and thus lock the TC at any time.
Position one is normal, postion two is as you describe above, position 3 locks the trans. If you do this you should ensure that you don't just supply 12v to the computer - not sure what will happen if you do, but the computer doesn't usually output 12v on this wire.
This is excellent for towing. I can select any gear manually and lock the TC. This means that hills that were giving me 110c + trans oil temps when towing now give me 80c temps and fuel efficiency is allso greatly improved - even just locking it top on an open road trip yields better fuel efficiency.
My ears are pricked, this is defiantly something to consider when I get around to doing my switch, some time in the distance.......................
Ok people, move along. Nothing to see here. Thank you, move along.
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The Stranger
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Re: Diesel Boys old terrano lock up solenoid mod
travis2ninja wrote:I wired up the switch and it works great!
Just a few more questions.
Is it fine to lock the Torque converter in any gear?
Also what is the voltage to supply to lock at anytime?
Im very new to cars
1) I have used it to lock the TC in every gear. Gear changes are less smooth with the TC locked so I try to avoid using the lockup unless I have selected the gear with the shift lever first.
This is not a problem as I moslty only ever bother to use it on steep hills, when towing or on the motorway and/or open road now.
I have a shift kit in mine, I would expect that a normal box would be a bit smoother and you may not even notice it being a little rougher.
2)I had a meter on the wire that you cut. The voltage varied from around 0 up to about 14v. From memory the solenoid locked at around 5.5 volts. I reasoned that as it can take 14volts ok I'd just try that - it has been working fine now for quite some time.
Another big benefit, particularly when towing is engine braking. Before this engine braking was very minimal and still generated heat. Now it is like a manual and allows the trans to cool even on a steep down hill.
Also I would suggest not locking -
1) at or below 2000 RPM as when you lock the RPM will drop and may drop you out of the power band - then you need to unlock, build RPM again and lock. Doesn't cause a problem just something watch out for.
2) when under high load. If I am towing and say want to lock on a hill I am normally over 2,000 RPM so not an issue there, but will back off the accelerator fractionally lock then hit the gas again. If I try to lock with the pedal to the metal it doesn't lock. Not sure if this would cause a problem or not, but don't wish to find out.
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fullthrottle
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Re: Diesel Boys old terrano lock up solenoid mod
Hi guys
Note: Do not lock the TC when the vehicle is stationary. If you do and then go to takeoff, you will shock-load the system, destroy the TC and Trans in no time flat.
Just wanting to confirm something.
Can I hold the trans in any gear regardless of how high or low the revs are? The aim is while crusing around most bush tracks 2nd is all I need. Locking the TC here would be beneficial, but I want to avoid the gear change while the TC is locked.
Desired workings:
Basically I can use the shifter and put it into 1st, 2nd, DRIVE(with no OD). This stops it from changing up any further from the selected gear. But at lower revs and when you put your foot into it it can shift down. Does the HOLD position stop change-downs in any gear?
Cheers
Note: Do not lock the TC when the vehicle is stationary. If you do and then go to takeoff, you will shock-load the system, destroy the TC and Trans in no time flat.
Just wanting to confirm something.
Can I hold the trans in any gear regardless of how high or low the revs are? The aim is while crusing around most bush tracks 2nd is all I need. Locking the TC here would be beneficial, but I want to avoid the gear change while the TC is locked.
Desired workings:
Basically I can use the shifter and put it into 1st, 2nd, DRIVE(with no OD). This stops it from changing up any further from the selected gear. But at lower revs and when you put your foot into it it can shift down. Does the HOLD position stop change-downs in any gear?
Cheers
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The Stranger
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Re: Diesel Boys old terrano lock up solenoid mod
fullthrottle wrote:Hi guys
Note: Do not lock the TC when the vehicle is stationary. If you do and then go to takeoff, you will shock-load the system, destroy the TC and Trans in no time flat.
Just wanting to confirm something.
Can I hold the trans in any gear regardless of how high or low the revs are? The aim is while crusing around most bush tracks 2nd is all I need. Locking the TC here would be beneficial, but I want to avoid the gear change while the TC is locked.
Desired workings:
Basically I can use the shifter and put it into 1st, 2nd, DRIVE(with no OD). This stops it from changing up any further from the selected gear. But at lower revs and when you put your foot into it it can shift down. Does the HOLD position stop change-downs in any gear?
Cheers
I haven't tried taking off with the TC locked. I have inadvertantly tried to stop with it locked - the engine stalled, so I assumed it would not even be possible to try and take off with it locked.
But I should imagine if you locked the TC with the trans in park all hell would break loose.
As to your questions. I haven't experimented with HOLD. My understanding (though I accept I very well may be wrong here) is that HOLD disengages the kick down switch on the accelerator and cause the trans to take off in 2nd. IF I am right on the 2nd gear take off thing, then you should at least be able to select 2nd on the gear selector and engage HOLD to lock 2nd.
But this wouldn't work for 3rd as if the RPM got too low it would cut back to 2nd.
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fullthrottle
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Re: Diesel Boys old terrano lock up solenoid mod
OK have been having a play and yes the HOLD position just disables the kickdown switch. In 2nd it holds fine.
Shame really because the truck chugs up hills much better with lower revs.
Must be a way to do it though. Will add that to the many list of things to play with
Shame really because the truck chugs up hills much better with lower revs.
Must be a way to do it though. Will add that to the many list of things to play with
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travis2ninja
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Re: Diesel Boys old terrano lock up solenoid mod
The Stranger wrote:2)I had a meter on the wire that you cut. The voltage varied from around 0 up to about 14v. From memory the solenoid locked at around 5.5 volts. I reasoned that as it can take 14 volts ok I'd just try that - it has been working fine now for quite some time.
I'm pretty sure 5.5 volts is always there and is around 13-14 volts when locked.
When i unlock the torque converter and without kicking down, if i back off the throttle and then try to lock again, it will not lock.
I was thinking maybe it has something to do with the 5.5 volts always being there. Maybe if i wire it up to have 5.5 volts even when the switch is off, i can kick down and it still be able to lock up when i have the switch on.???
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The Stranger
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Re: Diesel Boys old terrano lock up solenoid mod
travis2ninja wrote:I'm pretty sure 5.5 volts is always there and is around 13-14 volts when locked.
When i unlock the torque converter and without kicking down, if i back off the throttle and then try to lock again, it will not lock.
I was thinking maybe it has something to do with the 5.5 volts always being there. Maybe if i wire it up to have 5.5 volts even when the switch is off, i can kick down and it still be able to lock up when i have the switch on.???
From what you describe I have no such issues.
Only similar thing I note is that it won't lock on a trailing throttle, it needs throttle applied to lock, but this is the way this vehicle has always been - the TC never locked unless throttle was applied anyway.
I have a 3 position switch.
Down position is normal i.e. just connects the wires as if no changes. Middle position just severs the wires so as it has no ability to lock - i.e. I can leave it in fourth without locking the TC
Up position is TC locked.
So if I want it to have normal behaviour (and thus normal voltages) I simply leave the switch in the down position.
Re: Diesel Boys old terrano lock up solenoid mod
The Stranger wrote:
I have a 3 position switch.
Down position is normal i.e. just connects the wires as if no changes. Middle position just severs the wires so as it has no ability to lock - i.e. I can leave it in fourth without locking the TC
Up position is TC locked.
So if I want it to have normal behaviour (and thus normal voltages) I simply leave the switch in the down position.
Hi, I am asking this quietly here as I am a little confused and I confuse myself easily
When towing my caravan I have an issue with the over drive locking, (5th gear) and this causes the engine to bog down. Towing with out overdrive selected is of little use as at 90K's I am pulling 3500rpm. If I do as you suggest with your switch above and just have the two positions, open or closed, will this in the open position simply stop this (5th) gear from selecting thus just giving me 1,2,3 & 4?
Cheers, Pete; the confused one?
Ok people, move along. Nothing to see here. Thank you, move along.
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The Stranger
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Re: Diesel Boys old terrano lock up solenoid mod
kiwipete wrote:The Stranger wrote:
I have a 3 position switch.
Down position is normal i.e. just connects the wires as if no changes. Middle position just severs the wires so as it has no ability to lock - i.e. I can leave it in fourth without locking the TC
Up position is TC locked.
So if I want it to have normal behaviour (and thus normal voltages) I simply leave the switch in the down position.
Hi, I am asking this quietly here as I am a little confused and I confuse myself easily
When towing my caravan I have an issue with the over drive locking, (5th gear) and this causes the engine to bog down. Towing with out overdrive selected is of little use as at 90K's I am pulling 3500rpm. If I do as you suggest with your switch above and just have the two positions, open or closed, will this in the open position simply stop this (5th) gear from selecting thus just giving me 1,2,3 & 4?
Cheers, Pete; the confused one?
Yes it will. The problems comes however that there will be the most heat generated in this scenario (i.e. towing in 4th). I would not recommend that you tow in 4th unless you have a BIG cooler and a temperature gauge on your trans. As noted elsewhere I have the biggest engine oil cooler I could find on my auto and it will still cook in the situation you describe when towing my boat.
You are better off using 3rd with the TC locked, that will drop the RPM around 300-400 anyway, and put all power through the drive train.
Re: Diesel Boys old terrano lock up solenoid mod
Can anyone please confirm what voltage you are using to lock the Torque converter please?
I have an untested theory that I want to bounce off you guys.
Would it be possible to use the lock up feature by using a latching relay; where you activated a switch (momentary push switch with an LED indicator) to engage lock up when you are in Drive. This locks the torque converter and when you activated the brake peddle, a wire from it's switch could be used to unlatch the lock up relay putting the system back to normal?
My theory being that you have to press the brake peddle to stop so this is going to do the un-switching for you and there is no need to remember to switch it off and no engine stalling should you come to a halt.
I have enough trouble watching EGT, water temps and rear traffic when towing my caravan without having to worry about remembering to unlock the lock up switch as well.
Does this sound feasible at all?
I have an untested theory that I want to bounce off you guys.
Would it be possible to use the lock up feature by using a latching relay; where you activated a switch (momentary push switch with an LED indicator) to engage lock up when you are in Drive. This locks the torque converter and when you activated the brake peddle, a wire from it's switch could be used to unlatch the lock up relay putting the system back to normal?
My theory being that you have to press the brake peddle to stop so this is going to do the un-switching for you and there is no need to remember to switch it off and no engine stalling should you come to a halt.
I have enough trouble watching EGT, water temps and rear traffic when towing my caravan without having to worry about remembering to unlock the lock up switch as well.
Does this sound feasible at all?
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
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Re: Diesel Boys old terrano lock up solenoid mod
YES as its a SWICH
Re: Diesel Boys old terrano lock up solenoid mod
kiwipete wrote:I have an untested theory that I want to bounce off you guys.
So you would have a pilot light in a prominent place to show when convertors locked? A problem I see is that if engine braking down a hill, and have to brake slightly then the sudden unlocking of convertor will reduce engine braking -possibly not a nice feeling with ya caravan doing its best to push ya down the hill real quick!
Maybe keep a manual on/off switch operating a relay, but also have a speed sensitive switch there to deactivate relay when vehicle slows to under 15kph. Upon reaching speeds above 15 (or whatever you set it to) converter would behave as switch was positioned (ie normal control, or permanently locked).
I'm thinking jaycar or maybe dicksmith would have a kit to build up to make a speed sensitive switch- building it up might just be up your alley too?
Re: Diesel Boys old terrano lock up solenoid mod
Interesting thought with the speed sensing switch but awfuly difficult to achieve in my instance.
I do question having a switch to open the circuit and supply 12V to the solenoid, would this cause the computer to report a fault and not lock the torque converter when switched back in the normal running position until the system has been reset?
I do question having a switch to open the circuit and supply 12V to the solenoid, would this cause the computer to report a fault and not lock the torque converter when switched back in the normal running position until the system has been reset?
Ok people, move along. Nothing to see here. Thank you, move along.
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Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
Another question; those of you who have directly powered the lock up solenoid with a voltage via a switch, what have you done with the other end of the wire to the ECU? As cutting this wire will make the ECU report a fault and will not allow automatic locking of the TC once this switch is closed, until a full reset of the ignition switch has been done.
Have had a think about this today and wonder if say a 10W 12V lamp could be wired in series with the ECU wire when it is cut by the switch?
This way the ECU will still sense a load when it tries to switch the TC on/off even though the switch has isolated it.
As per this wiring diagram?
Have had a think about this today and wonder if say a 10W 12V lamp could be wired in series with the ECU wire when it is cut by the switch?
This way the ECU will still sense a load when it tries to switch the TC on/off even though the switch has isolated it.
As per this wiring diagram?
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
Trolling the net for more information on this mod I have come across this for a patrol. I do not see why it could not be used on the Terrano too, but some research of the ECU pin outs will be needed.
http://www.patrol4x4.com/forum/diy-modifications-accessories-40/torque-converter-lock-up-all-gu-4-8-autos-44349/
It will make for a pretty much fool proof system.
http://www.patrol4x4.com/forum/diy-modifications-accessories-40/torque-converter-lock-up-all-gu-4-8-autos-44349/
It will make for a pretty much fool proof system.
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
Is it possible to find a new valve body (heavy duty or whatever) to reconfigure the change pattern and get it to lock up in drive rather than lock up in OD?
Re: Diesel Boys old terrano lock up solenoid mod
A few links for you Pete. May not be of any help but you never know.
http://www.nicoclub.com/archives/nissan ... sions.html
http://forums.pigeonwatch.co.uk/forums/ ... 27td-auto/
http://www.4wdaction.com.au/shed/nissan-terrano
http://www.exploroz.com/Forum/Topic/214 ... erter.aspx
http://www.4wdaction.com.au/forum/viewt ... 83&t=70563
http://en.allexperts.com/q/Nissan-Repai ... roblem.htm
http://www.easyoffroad.com.au/torque-co ... tches.html
http://www.juland.com.au/translocker.htm
http://www.titantalk.com/forums/titan-t ... stion.html
http://www.titanspot.com/Titan/topic/36 ... -question/
http://www.navara.asia/showthread.php?t=7173
http://www.thenissanpath.com/viewtopic. ... 52f1807e0d
http://www.exploroz.com/Forum/Topic/103 ... wagon.aspx
http://www.youtube.com/watch?v=1itaXMhbl98
http://www.titantalk.com/forums/titan-t ... -mode.html
That should be enough for you to read for a bit. Possibly you have seen them before.
Interesting that later model nissans offer a tow mode (raises shift points I think). I wonder if this could be retro fitted into older vehicles?
Just a thought but if the tps switch on the injector pump is too slack and causing early shifts and lots of load/slipping and HEAT (idea stolen from another site)
http://www.nicoclub.com/archives/nissan ... sions.html
http://forums.pigeonwatch.co.uk/forums/ ... 27td-auto/
http://www.4wdaction.com.au/shed/nissan-terrano
http://www.exploroz.com/Forum/Topic/214 ... erter.aspx
http://www.4wdaction.com.au/forum/viewt ... 83&t=70563
http://en.allexperts.com/q/Nissan-Repai ... roblem.htm
http://www.easyoffroad.com.au/torque-co ... tches.html
http://www.juland.com.au/translocker.htm
http://www.titantalk.com/forums/titan-t ... stion.html
http://www.titanspot.com/Titan/topic/36 ... -question/
http://www.navara.asia/showthread.php?t=7173
http://www.thenissanpath.com/viewtopic. ... 52f1807e0d
http://www.exploroz.com/Forum/Topic/103 ... wagon.aspx
http://www.youtube.com/watch?v=1itaXMhbl98
http://www.titantalk.com/forums/titan-t ... -mode.html
That should be enough for you to read for a bit. Possibly you have seen them before.
Interesting that later model nissans offer a tow mode (raises shift points I think). I wonder if this could be retro fitted into older vehicles?
Just a thought but if the tps switch on the injector pump is too slack and causing early shifts and lots of load/slipping and HEAT (idea stolen from another site)
Re: Diesel Boys old terrano lock up solenoid mod
Thanks for the links Heath.
I sent a email off and have had a reply from this crowd http://www.automatictransmission.com.au/release.asp?NewsId=42068and this is their reply.
I emailed them the schematics I have and the reply is;
I wonder if there is more to the kit than a length of wire, switch, relay and fuse?
I sent a email off and have had a reply from this crowd http://www.automatictransmission.com.au/release.asp?NewsId=42068and this is their reply.
We believe that a lockup kit would work on that vehicle, however we don’t have any information on the wiring schematics for the vehicle which means we are unable to provide any instructions. If you were able to find a wiring diagram with the pin out information for the transmission computer we would be able to determine the correct wires to use.
Otherwise I can supply a basic lockup kit with generic instructions for AUD $265 plus freight of AUD $49.
I emailed them the schematics I have and the reply is;
This can be achieved. I can supply the kit to you for $265 plus $49 freight with the instructions you need.
Cheers
Jono
I wonder if there is more to the kit than a length of wire, switch, relay and fuse?
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
Another option I have thought of is to place a couple of power diodes in the circuit to prevent back feed and apply 12V directly via a switch to lock the TC at will, this will not generate any fault codes from the ECU. I have a simple latching relay circuit in mind that would use the brake pedal switch for unlatching.
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
Having the day off and spending too much time trolling on the net, I have come across this circuit diagram http://www.the12volt.com/installbay/forum_posts.asp?TID=78579&TPN=1&PN=1, and with a little tweaking with the addition of two power diodes to prevent backward voltages, it just might be the go.
With this circuit there should be no fault codes sent through to the ECU and the TC can be locked at will, it shouldn't matter what the ECU tries to do when the circuit is activated I hope.
An additional led on the activation push button switch circuit side could be used to indicate that the circuit is armed.
I will run this by an auto trans shop first to see if it is viable.
With this circuit there should be no fault codes sent through to the ECU and the TC can be locked at will, it shouldn't matter what the ECU tries to do when the circuit is activated I hope.
An additional led on the activation push button switch circuit side could be used to indicate that the circuit is armed.
I will run this by an auto trans shop first to see if it is viable.
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
-
The Stranger
- Bush Crasher
- Posts: 99
- Joined: Sat Nov 12, 2011 9:14 pm
Re: Diesel Boys old terrano lock up solenoid mod
kiwipete wrote:Interesting thought with the speed sensing switch but awfuly difficult to achieve in my instance.
I do question having a switch to open the circuit and supply 12V to the solenoid, would this cause the computer to report a fault and not lock the torque converter when switched back in the normal running position until the system has been reset?
With mine when I simply had a 2 position switch which could be set to either "normal" or to not lock the TC then I had to turn off the engine when I wanted to reset to normal mode.
With the 3 position switch which can select either normal mode, no lock or permanent lock mode I have no such problem.
I have no idea why, it seems to make no sense, but even if I turn off the TC lock now then go back to normal it's not a problem.
Re: Diesel Boys old terrano lock up solenoid mod
The Stranger wrote:kiwipete wrote:Interesting thought with the speed sensing switch but awfuly difficult to achieve in my instance.
I do question having a switch to open the circuit and supply 12V to the solenoid, would this cause the computer to report a fault and not lock the torque converter when switched back in the normal running position until the system has been reset?
With mine when I simply had a 2 position switch which could be set to either "normal" or to not lock the TC then I had to turn off the engine when I wanted to reset to normal mode.
With the 3 position switch which can select either normal mode, no lock or permanent lock mode I have no such problem.
I have no idea why, it seems to make no sense, but even if I turn off the TC lock now then go back to normal it's not a problem.
Can you do a simple drawing of how you have wired this switch please?
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472
Re: Diesel Boys old terrano lock up solenoid mod
I have had a tinker with a simple latching relay circuit to energise the "solenoid lockup" from a momentary push button switch, and de-energise with the break pedal circuit.
It works on paper.
And here it is on the bench.
Left switch and right lamp mimics the "lockup button" energised
Right switch and left lamp mimics the "brake switch" energised
Right lamp (lockup) energised via white lead connected to 12V as it would be when powered by ECU
I am toying with a similar circuit to this that will be used to fool the ECU when the TC is open circuited as per the start of this post. This would involve a resistance so the ECU still thinks the TC is in circuit, thus no error codes.
I have a little experimenting to do first.
It works on paper.
And here it is on the bench.
Left switch and right lamp mimics the "lockup button" energised
Right switch and left lamp mimics the "brake switch" energised
Right lamp (lockup) energised via white lead connected to 12V as it would be when powered by ECU
I am toying with a similar circuit to this that will be used to fool the ECU when the TC is open circuited as per the start of this post. This would involve a resistance so the ECU still thinks the TC is in circuit, thus no error codes.
I have a little experimenting to do first.
Ok people, move along. Nothing to see here. Thank you, move along.
Ph 0212078472
Ph 0212078472