LUMINATOR Posted July 29, 2013 Report Posted July 29, 2013 1990 Lumina, The car has a surging idle like it rev's up and down and some time dies. Bad IAC? Any help would be greatly appreciated! Quote
NickAbate Posted July 30, 2013 Report Posted July 30, 2013 1990 Lumina, The car has a surging idle like it rev's up and down and some time dies. Bad IAC? Any help would be greatly appreciated!I have a 93 Lumina Z34 with an issue similar to yours. It could be your IAC. Take it out and clean it if its dirty. If that doesn't work then just pick up a new one. They're very easy to change. Quote
LUMINATOR Posted August 1, 2013 Author Report Posted August 1, 2013 Ok yeah. It seems to die when its warm. Quote
redgrandprix Posted August 1, 2013 Report Posted August 1, 2013 map sensor maybe? i'm not sure if this is what my 94 did a couple years ago and thats what fixed it or not, have you tried using a obd1 scanner to see if it's throwing a code? Quote
LUMINATOR Posted August 5, 2013 Author Report Posted August 5, 2013 Well its a 90 so i can't use a obd1 scanner because its to old Quote
19Cutlass94 Posted August 5, 2013 Report Posted August 5, 2013 Obd1 started in the late 80's. your car is not that old. You can scan it with obd1 scanner.... Quote
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