1999 Chevy Tahoe with 87K miles. Bought it used with 59K miles and it started stalling within 2 months. It usually seems to happen as the car is warming up, but has happened after 2 hours of continuous driving as well. It is so random, it is really hard to narrow down. It may not stall for 3 months, then 1 week straight it stalls everyday. It can happen when accelerating or running a constant speed. It will act up in warm or cold weather. The RPM's usually sputter for about 10 seconds, then it may drive normal or it will completely stall. I have had the fuel filter, spark plugs and wires, dist. Cap and rotor replaced. Dealership said there are no error codes and the fuel pressure is fine. Please help, for I feel I'm chasing a ghost.
So I put new catalytic converters in on 4/3/06. Check engine light has not come on and it's running great. Old converters were hollowed out, had holes in them, and the guts were found plugging up the muffler.
Question is, how could they have gotten so bad after only 80K+ miles? Should I be worried that this may happen again soon? Can you check the gas/air mix, even though the check engine light isn't on?
Thursday, March 23rd, 2006 AT 7:39 AM