Ah, Yes, My 90 Geo Storm 2+2 does PRECISELY the same thing.
Ive had expert mechanics look at it, and everyones baffled.
First off, we pulled the valve cover, set the valve clearance, checked for stuck valves. Nothing. Clean as a whistle.
Then we tested the TPS, works to a T.
Then we swapped O2 Sensors, which helped, but didnt solve my problem.
We then adjusted Ignition timing, which also helped.
What I suggest doing, swap a new Idle Air Control valve in there, AND, flush the motor, I suggest seafoam.
THEN, clean the injectors. Even if it doesnt fix this problem, it will always help. =D
Hope I helped
Friday, September 19th, 2008 AT 9:22 AM