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VL Commodore

Vlt ecu?

Started by IDAREU · 13 Dec 2013 · 2 replies

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IDAREUArchived member
Hey guys chasing some advise. Slowly converting my Vl. Anyway got the turbo injectors in n hooked up the comp. 3ta. N car doesn't start soon as I pull a injector plug off any injector it starts n runs but obviously has a miss. If I put the n/a ecu in runs fine. Almost seems like it cuts the fuel pump out. But doesn't make sense on y if I disconnect a injector it runs. I know injectors a negative triggered. They have pulse n all have power. Also mounted the ecu properly. Just in case it was a earth issue but still no good. Anybody else had the this issue or know what it could be?
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GenieeArchived member
Its not directly related to your issue, but.... im doing a high-comp conversion right now, and in my troubleshooting (i think its 2 bad VLT injectors - causing a bad miss/idle) it DOES run on both computers. (before anyone jumps in - I know its not optimal, but i was using both computers to diagnose and troubleshoot). So...If its any help yes, mine did start and run (roughly) on both computers... using VLT injectors and removing the plug only confirmed my theory of a bad injector and removing a plug from a working one didnt kill it, but it DEF. made it much worse... Edit: Oh, wait i just re-read your post.... you already knew that lol Diagnostics on the ECU(s) tell you anything? Some original photos have not been recovered yet.
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IDAREUArchived member
I ended up finding it was dropping out the fuel pump for some reason. Soon as I bridge the relay plug n gave it direct power. My problem was solved.
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