Jan 10 2009
96 Buick Regal, will stall after a cold start & been running for 7 to 10 minutes.
96 regal, will stall after a cold start & been running for 7 to 10 minutes. Most of the time, it will start right back up & be fine for the rest of the day. Other times, it will stall & not restart for several minutes. When it does not restart right away, the only thing showing wrong on the scanner is that the fuel pump relay is not being turned on while cranking. This does not last long enough to hook up other test equipment & find the problem. Although, you can manually turn on the relay with the scan tool & it will run & after that, it will be fine again. Also, the only code that is in the car is an evap PO441B. I have already unplugged the purge solenoid in case it was pulling down the ECM somehow. No luck. Already replaced ignition module as well, same results.
Answer:
Must monitor fuel pressure when this issue occurs to diagnose further
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