2002 Mercedes Benz C320 car hesitates and idles rough

2002 MERCEDES BENZ C320
114,000 MILES • 6 CYL • 2WD • AUTOMATIC
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STEFFT
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  • 1 POST
I recently moved to central florida where my car has had nothing but problems all of a sudden. 1st thing of note was parked in a parking lot for about 10 minutes with my ac on max, when i went to leave lot the car died. Restarted with all accessories still on, went to pull forward car died again. Took it to a mechanic who said my fuel pump was bad, fine, whatever. Get the car back, it runs worse than before with or without the ac running. Idles rough, hesitates when gas is applied and wanted to surge a couple of times when stopped at a light. Took it back to that mechanic and they cannot figure it out. Recent work performed after the 100k mark, new plugs, wires, valve cover gasket, oil change, sway bar bushings, fuel filter, and now fuel pump.
May 11, 2010 at 12:19 PM
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RASMATAZ
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  • 75,992 POSTS
Check and test the following components below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position 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.
May 12, 2010 at 5:22 AM