Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
hello how are you ?
have you done basic checks ? have you replaced or checked the spark plugs , spark plug wires , etc ?
okay . 1500 is actually a bit high for the idle on that engine . You may have a vacuum leak at the intake manifold . Get an aerosol can of brake clean and with the engine idling in gear ( rough ) spray brake clean on the intake at the cylinder head and also at the base of the throttle body . Those years were known for TB base gasket and intake manifold gasket leaks causing a vacuum leak which would explain your problem .
the engine idle should change and if the engine is missing or running rough it will smooth out .