1991 Buick Century 6 cyl Front Wheel Drive Automatic 105, 00 miles
We have an intermittent engine failure, after warm-up. Car might run 15-20 minutes, then quit. When in the non-running state, we have pulled a plug wire and cranked to confirm spark, which was good and strong- jumped wide gap. We then purchased a fuel filter, which helped performance, but did not ultimately solve problem. We attached a fuel pressure guage to the fuel rail and observed a consistent 40 lbs with key on/engine off, and 35-42 with engine running. We left guage in place and ran until fail. At this time, fuel pressure was still evident on guage. We allowed the pressure to bleed down, somewhat, then turned the key on and it popped back up to 40, but would not start. After a longer rest/cooling (30 min or so) car starts up like nothing ever happened. What is the best way to determind the source of the fuel interruption (if that is the issue), or what else can I do to check this further. I could possibly rent a code reader if that would help.
have the same problem?
Thursday, July 23rd, 2009 AT 9:36 AM