1991 Chevrolet 1500 Pickup Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Chevrolet 1500 Pickup
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1991 Chevrolet 1500 Pickup ProblemsHighter Than Normal Idle Due to Vacuum Leak
The throttle body gasket may develop a vacuum leak which may result in a higher than normal engine idle. Failed gaskets will require replacement.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
1991 Chevrolet 1500 Pickup QuestionsTurns over but won't crank (1 answer)
It turns over, but won't crank. The distributor, cap, rotor, plugs, wires, are new. I changed the coil and it started in my driveway and seemed ok, but when I went for a test drive it stalled down the road and wouldn't start again.
Passenger side and bottom of motor all the way to the cross member is covered in oil what could be the problem i would gladly appreciate it it.