: Erratic Throttle

06-25-04, 03:05 PM
Well I think I seen like 2 threads concerning this but I didnt really find a solution. Under low acceleration the throttle wants to rev up and down. I already have new plugs, wires, air filter, fuel filter. I did buy a shift solenoid kit but havent put it on yet (was having a slight trans jerk under low acceleration but I'm thinking its the throttle doing this too). 94 SLS N* & no codes. Thanks for the help.

06-25-04, 03:14 PM
Sounds like the idle speed control motor or the closed throttle switch inside the idle speed control motor is failing. That is the canister shaped device on the throttle body with the plunger that the throttle lever rests on. The plunger moves in and out per the PCM commands to control the idle speed. It likely needs to be replaced. Search using "idle speed control motor" or "ISC motor" in the archives and read my posts for more info.