Hello. I have a 1994 GMC Sonoma with a 4.3 tbi engine. It runs rough on idle and wants to stall out. When it will not accelerate with out completely bogging out. I have already eliminated the converter. Suggestions please. Thank You in advance
Clean out the idle air control valve and check the rest below: Oxygen sensor.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.