Chevy

Asked by herna42 Feb 12, 2017 at 04:45 AM about the 1988 Chevrolet C/K 1500 Cheyenne LB RWD

Question type: Maintenance & Repair

I have 1988 c1500 the problem is when I drive it
won't pass 30 mph until letting off the gas and
again on 40 mph

1 Answer
221,015

Rowefast answered 7 years ago

Possible catalytic converter being plugged, or possible fuel regulator in the TBI. Get the vehicle warmed up and with the engine running park in a dark area, and look at the cat. If it is plugged it would have an orange tinge to it, it be hot glowing orange.

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