LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Alright, I need some serious help, possible pcm problem....

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Old Sep 3, 2004 | 05:23 PM
  #16  
ChevyTuffD.A.'s Avatar
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Joined: Aug 2003
Posts: 1,214
From: Fort Bragg, NC
Re: Alright, I need some serious help, possible pcm problem....

I didnt have the injector problem like your having. But my car went wacko once the fuel pump got hot or whatever. When I hooked up the fuel pressure guage and turned the key it would prime to like 4psi and then drop off right after it stopped rising. When the car was running it would put out about 35 psi but right after the car was turned off it would drop instantly to 0. So yea my fuel pump was messed up big time. But the time frame for the car running good and then crapping out is about the same range as mine. This is what leads me to beleive its your problem. My car also died at like every stop but would start back up and then die again at the next stop. I would hook up a fuel pressure guage and see what its doing. Dustin.
Old Sep 5, 2004 | 11:40 AM
  #17  
Black94mula's Avatar
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From: Lemont IL, usa
Re: Alright, I need some serious help, possible pcm problem....

Sounds like a good idea, I'll have to get a gauge. I got the starter changed (free under warranty too thank god), and while I was under there, I thought I found my problem. The passeger side oxygen harness was sitting against the header, partly burned. So I moved that outta the way and figured that was it. No dice, it ran for like 15-20 minutes with the A/C on and crapped out. Then I just unplugged that harness and ran it, same thing but it ran pretty rich, smelled good . Then I unplugged the MAF just for ****s and giggles, and still no dice. I'm wondering now if it might be the fuel pump, i'll get a gauge and see whats happening. The pressure should stay the same even when it goes into fits right?
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