91 chevy van, runs rich and surges but is intermined

Asked by Jan 08, 2013 at 03:23 PM about the 1991 Chevrolet Chevy Van 3 Dr G10 Cargo Van

Question type: Maintenance & Repair

runs rough when cold, have to feather gas when cold. put gas addative in it will run good sometimes. problem comes and goes

2 Answers

5,700

Sounds like the oxygen sensor or sensors are getting bad

98,115

Could be a stuck open PCV valve.

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