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Re: VR V6 Not starting
Posted: Mon May 22, 2017 11:45 am
by L67PSI
Dazza92VP wrote:If your getting spark the dfi is working can you log and see if the ecu is actually receiving an rpm signal from the dfi module as vlad said dfi is in bypass mode during cranking and doesn't need the ecu at all to create spark but you said you have no injector pulse which is
Leaning towards no rpm signal to the ecu so its it going to fire the injectors at all
Can tuner pro show the rpm signal while cranking?
Re: VR V6 Not starting
Posted: Mon May 22, 2017 11:47 am
by L67PSI
antus wrote:If there is no codes i'd be looking at the injector wiring on the output side of the computer. Ive heard of hard to find problems in the loom causing similar and i guess it could also be a short in an injector preventing others from firing.
I just looked over injector wiring. It is getting 12v to both both side of injector plug, and 12v all the way back to pin C16 (light blue) from wiring diagram.
Re: VR V6 Not starting
Posted: Mon May 22, 2017 12:42 pm
by Dazza92VP
Should be able to see rpm while cranking yes
Re: VR V6 Not starting
Posted: Mon May 22, 2017 1:31 pm
by wozza
if you have spark, get some easystart or start ya bastard and spray some down the T/B.... if the car fires then you know its fuel related...if not then start checking things like compression, plug leads in right order timing ect...
Re: VR V6 Not starting
Posted: Mon May 22, 2017 1:34 pm
by Dazza92VP
He already has sprayed something down the inlet and it fired as well as put a noid light on the injector plug and it didn't pulse
Re: VR V6 Not starting
Posted: Mon May 22, 2017 2:41 pm
by wozza
Dazza92VP wrote:He already has sprayed something down the inlet and it fired as well as put a noid light on the injector plug and it didn't pulse
Doh! didnt read that and it was in the first post....
....nothing to see here move along ....move along
ecotech related but may help
https://forums.justcommodores.com.au/th ... tec.77958/
Re: VR V6 Not starting
Posted: Mon May 22, 2017 3:56 pm
by L67PSI
Dazza92VP wrote:Should be able to see rpm while cranking yes
Using USB ALDL and Efi Live v4, I was able to see cranking RPM, was around 220.
Re: VR V6 Not starting
Posted: Mon May 22, 2017 3:57 pm
by delcowizzid
Sounds like vats is not disabling or ecu has no power you will get spark and injector power even without the ecu plugged in .if you are getting check engine light on ignition ecu is at least powered up
Re: VR V6 Not starting
Posted: Mon May 22, 2017 5:22 pm
by antus
Good point dead bcm or bad ring around the key would fail vats and kill fuel.
Re: VR V6 Not starting
Posted: Mon May 22, 2017 5:54 pm
by Dazza92VP
That's the next thing was going to say if it's got rpm. Does efilive show immobiliser info see if it does get any signal from the bcm like 12p or 11p does?