WHY DOES MY IDLE GO UP AFTER THREE MINUTES OF RUNNING

1991 Chevrolet Blazer

Tiny

garcia55

December, 23, 2011 AT 8:31 PM

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

2 Answers

Tiny

rasmataz

December, 23, 2011 AT 8:37 PM

Clean and test the idle air control valve -start here

Tiny

CodyMcneal

December, 27, 2011 AT 8:34 PM

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.

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