Mechanics

WHY DOES MY IDLE GO UP AFTER THREE MINUTES OF RUNNING

1991 Chevrolet Blazer

I start the Engine and after Three min. Of running the idle goes up


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Garcia55
December 23, 2011.



Clean and test the idle air control valve -start here

Rasmataz
Dec 23, 2011.
You need to replace your fuel pump
My k5 blazer was doing that and we talked to te mechanic about it and he said that it is proably the fuel filter so we replaced it and it fixed it.

Tiny
CodyMcneal
Dec 27, 2011.