I have an 88 isuzu i-mark that is having problems with idling. it starts fine, but when i press on the gas pedal the throttle will stick and when i let off of the pedal it will stick for a moment and then the throttle falls until the car dies. i'm thinking its the fast idle control device, but am not sure. please let me know if you have any ideas of what the problem is
idle problems on 1990 Isuzu Amigo
by theephman in Conover, NC on December 07, 2010
ANSWER by dandd on December 07, 2010
I would clean the throttle body, if is is full of carbon, it will stick like you are experiencing. Also, be sure that your throttle cable is in good shape and not frayed and thus sticking in the cable housing. After you clean the throttle body, re-set the idle hard stop by warming up the engine and then unplugging the idle motor. You want the car to barely idle, like 500 rpm with the idle motor unplugged, then when you plug in the idle motor, the idle should go to 800 or so.
A faulty motor mount may cause a vibration at idle. Our technicians tell us that if the engine is operating to specifications and a vibration is still present revised motor mounts are available whi...
On some models, the right motor mount cover can hit the chassis and cause a vibration at idle. Replacing the motor mount will repair this issue.
car starts and idles fine.When shifting to reverse or drive,idle drops almost instantly,sometimes even stalls.doesn't do it all the time.
it does it all the time and when you are driving it also goes up higher and you have to tap the gas pedal to bring the idle back down.
On certain models contamination of the grease on the gas pedal potentiometer causes the Check Engine light (MIL) to come on and may cause a rough idle. The potentiometer will need to be replaced an...