[V8] idle, poor running, help?

[Larry Schor]

My 91 V8qm was running perfectly except for an intermittent pesky high idle.
I replaced the ISV and the O2 sensor to no avail. Last week, the car
suddenly felt like it lost 100 hp, would not rev above 4000, and smelled
like sulfur. My mechanic towed the car to a colleague who pulled the code
for the AFM. Upon inspection, the AFM looked "fried." Sounds like the
problem? Not so fast. Yesterday the installation of a "new" used AFM changed
nothing. Any suggestions? BTW, this has been frustrating to the point that I
would consider selling the car to someone who knows them better and can
provide a proper home. It is black wit travertine sport seats, rare (1 of
79?) 5-speeds, 153K, $3,000.00 stereo, IA chip, full stebro, and got two
thumbs up from Keith and Bruce at audiconnection. I would consider mildly
insulting offers, but would certainly prefer to make it a keeper.

 

Larry Schor PhD. LPC

Associate Professor of Psychology

Coordinator of Therapeutic Services

State University of West Georgia