1994 Chevrolet 1500 Pickup Questions

Get answers to questions about your 1994 Chevrolet 1500 Pickup at RepairPal. Find solutions, diagnose problems and get back on the road.

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check engine light comes on and off

When cranked its backfiring .When you first started up while its idling and while operating the vehicle and when it's turned off.

incoming air temp reads -40 so runs very rich. this truck has no I.A.T sensor so I don't know where this info comes from

if i hold the gas it will run smooth for a few seconds but will start to spit and sputter and i have to feather the gas to keep it running and no trouble code

What do I check

when running my truck leaks engine oil that runs down the passenger side of the clutch housing and finally onto the y pipe where are possible reasons for this?

gas in the carb it starts and runs fine until i kill it. Next time it may start ok or I may have to pour gas in the carb again. What could possiable be the problem?

sound changes pitch slightly when gas pedal is barely touched, then returns to high pitch. Sound stays same with increased rpms. just repaired fuel return line due to rust out. changed fuel filter at same time a week before this started. Cleaning the throttle body didn't have an effect on whistle noise. Butterfly looks normal. Guessing vacuum leak on a component. where do you start? Thank You

4.3 liter stalled pulling out of driveway. Repeated attempts to restart no go. Ether, gas prime, no go. Gauge shows 1/4 tank; added two gallons and now starts every time, runs at fast idle for about 10 to 20 seconds then dies flat or sputters for a while before dying. Currently suspecting fuel pump, throttle body gasket or throttle position indicator.

gas petal has like a Sweet spot that I have to hold it steady at or else I'll Dramatically lose speed and the truck starts studdering/cutting back, to Much gas petal or to Little gas petal and the engine studders bad, have changed oil and oil filter recently bought new Duralast Alternator that works Great btw. Any Suggestions PLEASE, also check engine light goes on and off Frequently