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Warm stalling

J

Jaybird

New member
Looking for assistance... 01 GT runs fine when cold, stalls when warm. Holding the RPM's up, it runs rough, missing and sputtering. Returning to idle, may as well turn off the key. No codes. Trying to start when warm it fires and dies. checked fuel pressure and it's right, 55 PSI cranking, 50 PSI KOEO and 45 PSI running (cold). This really acts like a fuel pump but with the pressures being what they are?? I'm open to all opinions. Thanks in advance
 


I have had issues with the fuel pressure regulator on an L36 which caused starting issues when starting the car after it was warm. Are you getting any kind of code?
 
I'll try the MAF sensor. I think I have pretty much ruled out fuel pressure and fuel pump as possible causes.
 
replaced the MAF, wife drove it around today. after about two hours of various errands, it failed again to the point that she had to call AAA. would not stay running. I got home, it started, ran fine for 45 min. drove it around the neighborhood, shut it off, re-started, Repeated. Everything seems normal. Anybody got a clue?
 
Beginning to suspect the ignition. When it won't start pull a plug wire off and ground it to something and attempt to start it. Look to see if you are getting spark. Might be the ICM going.

My only other thought is the Crank Position Sensor. Right before it dies does the tach ever drop to zero?
 


Not the cps. Experienced that before. Don't think it's the ICM. I'll check spark anyway when it happens again.
 
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