I have a 2005 bonneville, 3.8. I stopped for a moment, shut off the car and when restarting, it ideled extreamly ruff and backfired. Without constant accelerator pressure it would die. After a couple of hours of cooling, it started, ran fine for about 15 min and the problem started again. It has never had any engine problem before. I do have an intermittent problem with the oil pressure sending unit dropping out, apparently a problem with this car. I replaced it about 2 years ago, now it is recurring. Any connection?
Tuesday, May 17th, 2011 AT 6:26 PM