1993 Chevrolet S10 Q&A

1993 Chevrolet S10 Question: what will cause an eratic idle and throw a light

have replaced the cap rotor plugs wires and egr -
Answer 1
Would help if you supplied the code attached to the light. Have a parts store attach scanner and hit us back with code. -
Answer 2
More than likly you have a vacuum leak. The way to locate where would be to get a can of carbuerator cleaner and with the engine running spray around the throttle body and vacuum line and listen for a change in idle. -