Offroad-Express

Hi from Auckland.

I own the facelift model and have been having a few issues with the injector pump playing up. I've read a few threads regarding this common issue regarding the pump issues etc. However I do not want to recondition this ETi pump, not a fan of electronic wizardry. I have a list of mods/upgrades I want to do (QD32, custom exhaust manifold, TD04HL-15/19T, 63mm exhaust system etc) and this vehicle is my daily driver (can't afford to have it off the road for long, work, kids etc)

What I want to do is convert the truck to run the mechanical pump from the earlier model, so I bought one and will have it reconditioned shortly along with the injectors. Vehicle is 320k+ and I assume everything is original (looks that way at least)

I believe the TPS is attached to the eti pump and with my limited knowledge of the electronic wizardry required to complete said task, I decided to seek the knowledge of the "experts". I began with MotorTech - have dealt with them previously and found them very helpful, but they don't know of any one who has done what I want to do. They referred me to Pete at Tauranga Diesel Services, again someone helpful but not his expertise. He mentioned the tps, auto box being controlled by the ecu, possible dash lights not working etc - best to talk to Gearbox specialist. So rang the Gearbox Factory in East Tamaki. Have previously spoken to them about upgrading the auto box (one of the upgrades planned to do), again my issue not something they have come across best to talk to an auto sparky - didn't bother and decided to ask here.

I have an accelerator cable but I do not know how to get around the tps issue. It has been mentioned in a few threads (possibly different site, memory bit fuzzy at times) but not enough for me to understand how to go about completing the conversion. I also do not want to cock something up nor run into other issues possibly created by what I am trying to achieve and be stuck with a non-operational vehicle.

Has anyone here completed the conversion and is prepared to help me please and set me straight on what is required to do or am I barking up the wrong tree here? Should I just recondition the original pump and chip the computer to increase fuel when I have upgraded the gearbox and installed bigger motor/turbo.

Be good to know what you guys think and recommend - other than save $20k and buy a GU.

Hayden at MDS in Kaiapoi does these all the time, He also builds performance pumps for them. They are not local to you but worth giving a ring.

The TPS is on the accelerator pedal mount with the fly by wire sender. there is a brown three pin plug and a grey three pin plug. funnily enough the auto trans runs perfectly fine if you leave all the other sensors plugged in etc. but in my case i ripped out the entire loom,ecu and pump and left the TCU(transmission computer) to it's own devices and surprisingly hasn't effected it's performance.

my advice and which i have just done. ditch the ETI pump and bolt a mechanical one in there with the accelerator cable from a D21 navara ute.
There is a plate you will have to unbolt from the firewall to allow the cable to go where the rubber gromet is by the brake booster.

I did mine myself all up 8 hours drive in drive out with a bit of fine tuning of the timing later on.

The only thing that will stop working is the tachometer as it receives a varying volt positive signal from the ECU where as the earlier mechanical pump/engine used a negative signal from a magnetic sender screwed into the timing gear housing.

Thanks Dan and Crash - most helpful.

Crash have you looked at the tacho adapters that anything electronic make? It might resolve your issue.

ChurchurDan wrote:Crash have you looked at the tacho adapters that anything electronic make? It might resolve your issue.

nah got it sussed. I drilled and tapped the timing gear cover and put the old sender in when i did the injector pump.

Got a pre facelift tachco'(negative signal), going to take the needle and face off mine and put it on the earlier instrument intall it back in the cluster and run a wire from the sender.

nissan's motto should be "everythings interchangeable"

If the earlier Mistral tacho is anything like the d21 terrano one that might not work as the tacho is driven out of the egr ecu not directly off the pick up. A mistral might be different.