engine running rough after warm up

John Gillespie

Asked by Dec 17, 2015 at 04:38 PM about the 1988 Chevrolet Blazer Silverado 4WD

Question type: Maintenance & Repair

My truck runs strong when I first start it and
as soon as it warms up it begins to cut out n
just runs rough in general I put new pluggs
and wires in it

4 Answers


Check for any vacuum leaks

Nayla Hubbard

It sounds to me one or both could are bad,when they heat upit loses power check that it's either 1234 depends if its 8 cylinder or not.

Nayla Hubbard

Your coils check em,that's what it is.

Michael Phillips

Have your catalytic converter or all (if more than one) checked on the exhaust system. If clogged, vehicle can't breathe.

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