ok, it doesnt do it at night time when its cooler....itll idle like right at 900. but during the day when i come to a stop, itll bounce from 900-1300. im startin to get annoyed....i cleaned the evac which did nothing.. just curing what it could be. thanks for any help!

Dane

 

try burping coolant to remove air bubbles.

 

how do you do that?

Dane

 

you gotta squeeze a rad hose with the car running to squeeze out all the bubbles.. check a chiltons/helms.