MellowVR4
Well-known member
hey guys and gals. Im having a little issue with my DD, its a 91 talon awd auto. when i first start the car in the morning the rpm's jump to 2krpm and stays their for like 30 sec then the rpm drop down to 1800 rpm, when that drop happens immeatley the car starts to idle surge and it doesnt stop until the car is running at normal operating temp. Now that the cars warm its idleling fine, but if i mess with the bis screw and turn the idle up back to 1500 rpm its starts idle surging again, but then i turn it back down then it goes away. Does anybody know what can be causing this problem. so faR ive changed the main temp sensor, o2 sensor, maf and isc. need some help troubleshooting this issue im having. So if anybody has had this problem before please let me know what u did to make it go away please, thnx. will be very appreciated.