Sup guys, i have a question....I have a 95 ex supercharged coupe and everytime i start the car up on a cold crank, my rpm keeps rev-ing up and down until the car warms up, whats the reason for this????? could it be my IAC valve? or tps sensor?? any other clues??? thanks

 

Vacuum lines...check them all with a spray bottle and water.

 

check for a vaccum leak,..or take off the IACV which is located behind the IM (closest to firewall) and clean the screen with carb cleaner

 

if it's a jackson, then bleed the air out of the water jacket. aair pockets in the cooling system will also cause an irratc idle