1997 Pontiac Grand Am GT w/ 2.4L 4cyl. Idling Low and Running Rough. any suggestions
It has brand new ignition coils, module, boots, and plugs. Motor Mounts are fine as best
as I can tell. I have removed and cleaned the Throttle Body, TPS, IAC, Fuel Rail and
Injectors. It is running smoother but I am only running 800 rpm at Idle w/ transmission in
park. Throttle Response is slightly sluggish but decent and It evens out at about a
1000rpm. I have searched but haven't found any vac leaks. Any suggestions?
did u replace the map sensor vac hose? most gms idle between 800 - 950 at idle and its kind of a rough idle for quads.
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