my car is a 90 da9 with a full xsi swap including the ecu...

problem # 1: i went to pick up my roommate at the airport one day and the coolant temp began to rise as the car idled. as soon as i started to the temp dropped.... i assumed it was the thermostat getting stuck. the temp never got passed 3/4 and it always drops as soon as i begin to move. also noticed the idle began to jump from 1000 to 1500 but when its warm it idles fine.

problem # 2: i have a cel 2. the light on the ecu blinks two times fast and stops. the car does nothing out of the ordinary. it usually comes on after i get off the freeway.


any help on these problems is appreciated.

 

threomast is getting stuck and u need a new idle air control sensor that back on the intake manifold