Engine Performance problem
2001 GMC Jimmy 6 cyl Four Wheel Drive Automatic 110, 00 miles
I have a 2001 GMC Jimmy and my mechanic can't figure out what's wrong with it. It stalls and sometimes dies out when it heats up. The problem is worse in warm weather. So far they have replaced 7 mass airflow sensors, 2 fuel pumps, tuned it up, fixed an evaporation leak, replaced the computer chip and more. It runs fine until it warms up. Then it stalls, especially at highway speeds. All filters, hoses and belts are OK. The car is still under extended warranty. The computer codes keep saying fuel pump, mass airflow sensor or, the case now, nothing. The dealer I went to said he couldn't help without computer codes and actually said I had to get stuck on the side of the road before he could help. The problem is over a year old. It starts to die out after 30 minutes to 1 hour of driving, and then it's OK until it warms up again. It will die out if I try to give it gas. Does anybody have any other ideas besides the mass airflow sensor, fuel pump, tune up, new set of wires, fixed evaporation leak, replaced computer chip, crankshaft sensor and ignition control module?
have the same problem?
Monday, July 5th, 2010 AT 12:12 PM