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Car stalls while driving then takes a while to refire?

Tiny
WALKERWEISER
  • MEMBER
  • 1994 PONTIAC TRANS AM
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
Car stalls while driving then takes a while to refire. It does matter if it is cold or hot. I have changed the icm, fuel pump, fuel filter, air filter, plugs, plug wires, coil and coil wires. Sometimes its starts then dies. Sometime you can drive it and it runs fine. Then you try and start it after driving it. It starts the dies just like you turned the key off. It does this randomly. Any thoughts?
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Thursday, January 22nd, 2015 AT 9:33 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Clean throttle plate on both sides with choke cleaner and iac hole. Scan for codes and check fuel pressure with a gauge 41-47 psi any thing lower pump is bad.
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Thursday, January 22nd, 2015 AT 12:14 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
They replaced the fuel pump so I don't think that is it, I can tell you if the MAF sensor is starting to go out it can tell the PCM to turn off the fuel, and can heck this by unplugging the MAF sensor to see if it makes a difference, here is the location of the sensor so you can give it a shot. Please go over this video as well

https://youtu.be/lXLJbuAZ4CE?si=qfg3CJ1tZMgOUOHd

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Saturday, September 28th, 2024 AT 6:59 PM

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