Mechanics

S-S0 BOGGING

1994 GMC S15 • 6 cylinder 2WD Automatic • 168,000 miles

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
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Elkinsw
December 25, 2010.




Clean out the idle air control valve and check the rest below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard it

Rasmataz
Dec 25, 2010.


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