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Commodore 3.8 HELP!!

Posted: Mon Aug 04, 2008 7:47 pm
by COMILUX
Hey guys.
HELP PLEASE!!!!!

Ive got a holden 3.8v6 from a VR commodore in my hilux.
A weekend or two a go it stoped on me while throwing it around in the mud.
At the start it would idle fine and rev fine but when under load wouldnt rev atal and then it stoped and wont start any more.
Has no spark or injector pulse so replaced crank sensor and still no go.
Makes me think it might be ecu but how could i diagnose this without buying one and trying it?
Any other posabilitys that it might me? Anyone had similar problems before?
Does anyone have a vr engine ecu in chch that i could maybe borow to plug in to see if its the problem.
Any help would be great.

Thanks
Nick

Re: Comidore 3.8 HELP!!

Posted: Mon Aug 04, 2008 7:53 pm
by rangimotors
commodore 8)

Re: Commodore 3.8 HELP!!

Posted: Mon Aug 04, 2008 8:04 pm
by COMILUX
Thanks, cand uo tel i wast any gud at skol? :roll:

Re: Commodore 3.8 HELP!!

Posted: Mon Aug 04, 2008 8:15 pm
by rangimotors
ha ha if all else fails ill give you the lada :lol:

Re: Commodore 3.8 HELP!!

Posted: Mon Aug 04, 2008 8:18 pm
by cruzerboy
I can get the ecu out of my mates monster suzuki thing hes bilding and hook that up and see if thats the problem its a VN ecu i guess there the same

Re: Commodore 3.8 HELP!!

Posted: Mon Aug 04, 2008 9:03 pm
by H2OLOVA
Could always visit a carsales and take one for a test drive :?

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:31 am
by rokhound
Has it got the factory ecu or an aftermarket one?
Holden ecu's are super simple for those who know their way around them. (the v6 I believe is a 1 wire hook up). There is a holden wrecker in Gasson st who may be able to help you out with another (or loaner) box

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:33 am
by COMILUX
cruzerboy wrote:I can get the ecu out of my mates monster suzuki thing hes bilding and hook that up and see if thats the problem its a VN ecu i guess there the same


Thanks mate, think series two vn engines are the same but the early series one is diferant. Could you find out what its got please.

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:37 am
by COMILUX
rokhound wrote:Has it got the factory ecu or an aftermarket one?
Holden ecu's are super simple for those who know their way around them. (the v6 I believe is a 1 wire hook up). There is a holden wrecker in Gasson st who may be able to help you out with another (or loaner) box


Hey, just factory comp but peoplethat wired it didnt add the diagnostic plug so cant scan it, thanks ill give them a try.

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:39 am
by COMILUX
H2OLOVA wrote:Could always visit a carsales and take one for a test drive :?


haha i like your thinking, maybe ill borow a 5.7 v8 one and swap the lot :wink:

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 8:07 am
by radar21
hay nick stop in to work we have a ecu

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 6:18 pm
by cruzerboy
had a look at my mates one today its a series 1

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:07 pm
by COMILUX
radar21 wrote:hay nick stop in to work we have a ecu


Ledgend, will do in the morning mate, thanks

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:08 pm
by COMILUX
cruzerboy wrote:had a look at my mates one today its a series 1


Cool thanks anyway mate

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:30 pm
by radar21
the plug on the module gives alot of trouble two that controls injector pules to so check that out to

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:41 pm
by COMILUX
Ok where would i find that normaly?
Are you able to test ecus at your work?

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:46 pm
by radar21
bottom of the coil pack at the end its got a 8mm bolt in it check that its got power and that its tight and that the plugs not bent nah we send them to nelson a place called anything electronic

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 7:58 pm
by COMILUX
do they call that the DFI unit?
i bought a coil and a DFI unit of trademe but it apares hes done a runner with my parts and money :evil:

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 8:18 pm
by radar21
yep direct fire injection the dear part of it all .that sucks that the guy made off with your money :x :x :x :x :x

Re: Commodore 3.8 HELP!!

Posted: Tue Aug 05, 2008 9:13 pm
by radar21
IGNITION sorry not injection :oops: im away with the faires at the mowe

Re: Commodore 3.8 HELP!!

Posted: Wed Aug 06, 2008 8:58 pm
by COMILUX
Tryed coil pack and dfi today but still no go, one i used is from a vn series one but was told it would work fine so hoping that not still my problem, takes me back to the ecu now tho. hope i can find one to borow and try if that fails ill admit defeat and give it to someone thats smarted than me with auto sparky shit.

Re: Commodore 3.8 HELP!!

Posted: Thu Aug 07, 2008 8:54 am
by nstg8a
COMILUX wrote:Tryed coil pack and rdi today but still no go, one i used is from a vn series one but was told it would work fine so hoping that not still my problem, takes me back to the ecu now tho. hope i can find one to borow and try if that fails ill admit defeat and give it to someone thats smarted than me with auto sparky shit.


i was gonna say coil pack as well.... Nailz on here had a RX7 with a 3.8 which developed similar syptoms, and it was coil pack, turned out ants had made a home in it....
but if you swapped coil packs then obviously not that.

Re: Commodore 3.8 HELP!!

Posted: Fri Oct 03, 2008 9:27 pm
by nivaman
rangimotors wrote:ha ha if all else fails ill give you the lada :lol:

Yeah go the mighty Lada :) .