its 94 gsr, the motor is completely stock

when i started it up, it went right by at 2500 idle and let it warm to the right temp at 1500 idle,

so when my buddy unplug the iacv under the iacv and its went drop all the way to abt 750 to 850 idle ALSO the CEL went on....

but when put the terminal plug back on iacv and the idle went up high at 1500 idling...

by the way when i was driving, it's at normal temp and everytime i put into NEUTRAL, the idle went up to 2500

when i hit the brake pedal and let its go and the idle went up like 250 idling more...

could be vacuum leak or need adjustable by the throttle body????

 

bump

 

ttt

ignore this
when i hit the brake pedal and let its go and the idle went up like 250 idling more...

do anyone know wht cause to this problem??

 

I'm not too sure. Have you tried adjusting idle speed?
Try that first, and see if the car runs normal.
If not, it is posible you have a leak somewhere.

 

ok, i could try to see whts up