1991 Chevrolet Cheyenne Intermitant Engine Miss

1991 CHEVROLET CHEYENNE
173,500 MILES
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MODELT47
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  • 1 POST
Engine is 4.3
Engine will run just fine then with no warning it will act as if it lost three cylinders. Then after a very short period will run just fine. I seem to notice this in the higer gears while under load. The engine will idle all day with no trouble.

Have changed the fuel pump,computer, distributor cap and rotor, spark plugs,plug wires, air filter,fuel filter.

Thank you

Mike
Mar 14, 2012 at 12:22 AM
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