i have a b20b in my 90 da. the only problem im having is the idleing. when i first start the car to warm up its all the way to 3000 after the car is warm up its jumps from 1000 to 1500 how can i fix this problem and keep its to 1000 idle..

please help. thx

 

try cleaning out the iacv and maybe replacing the fitv if you have one i had the same problem it was the iacv they're pretty expensive