Engine Performance problem
2000 Pontiac Sunfire 4 cyl Two Wheel Drive Automatic 115000 miles
I am having issues when I am in gear but not moving. If I sit at a light too long (or at a couple lights in rush hour) the temp gauge starts to shoot up. Once I get moving again at a steady pace for about a mile or so, it seems to cool off again.
If I turn on the AC (it only works on full blast, all the other levels dont work at all), after about 5 minutes, it REALLY starts to overheat. Then it starts to rev the RMP while I am waiting at a light. Enough to where I have to keep my foot REALLY firmly on the brake or I will surge forward. Same deal though - once I turn off the AC and drive steady for about 1 or 2 miles, it cools down (according to the gauge) and drives normal.
My coolant level is good, and I have flushed it several times. The oil is good, as I have had 2 or 3 oil changes since this activity has been going on. The fact that the AC stimulates the problem is what has me baffled!
have the same problem?
Tuesday, August 11th, 2009 AT 1:17 AM