1991 Buick LeSabre Limited 6 Cyl 3.80L
How to turn of "service engine' light?
this 91 lesabre seems to run OK except I have a problem with the dash lights at night. they come off and on randomly, mostly off. I was pounding on the dash one night hoping they would come back on when the Service Engine light appeared? I thought I may have caused it but guess it came on for some reason. don't know why? it runs fine. but would like to have it reset. disconnecting battery does not work.
unplug map senor.light will come on and engine idle won't come down from starting idle.make sure you disconnect neg.battery cable before you disconnect it,and engine off when re-connecting.can cause senor to fail if you don't do this and after re-connect it will take about 3 minutes depending on your cars computer for engine ligt to go back out. let it do by self not by OBD code clearing-computer has to adjust for this action