Engine Performance problem
1991 Chevy Lumina 6 cyl Front Wheel Drive Automatic 150, 00 miles
hi. My 3.1 Lumina (car)stalled yesterday at about 30 mph, (engine was warm). It restarted fine and I drove slow home. Next day discovered that while engine was cold, it will start fine, but when you throttle up fast it dies. If you throttle up slowly it will stay running.I was doing this in "park". Didn't want to take a chance of breaking down.I replaced the cps about 6 mos ago when I had a no-start deal and it corrected the problem. For the last few months when the engine was warm it would idle rough, but I think it needs a new tps or and iac valve. But it ran good enough, I didn't attempt to repair. When the engine is cold it is in open loop, it doesn't use the sensers does it? So the tps wouldn't have anything to do with it? Fuel pressure was 45 psi at the schreader valve. SO. My engine always strts up goog. Hot or cold. Doesn't idle well when hot. But will stall on fast acceleration hot OR cold.
have the same problem?
Wednesday, August 5th, 2009 AT 7:55 AM