Engine Performance problem
1998 Chevy Blazer 6 cyl Four Wheel Drive Automatic 127000 miles
I have a 98 chevy blazer with the 4.3 l vortec. The service engine light is on and according to checker and autozone and a reputable shop its the IAC valve.
I have replaced the valve but still have the engine light on and the diagnostic is still the IAC is there something else I need to check? I did check and replace some of the vaccum line but this didnt fix it. Can the mass air flow sensor cause the continued surging?
The engine idles good but when I drive it at 40 mph it seems to run by itself and as I come to a stop it has to be at a complete stop before the car will kick back down.
What do I need to check and are there any places I can go on the net for diagrams.
have the same problem?
Monday, January 25th, 2010 AT 9:48 PM