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1988 Mercedes Benz 300e missing

Tiny
GARRYRIDGLE
  • MEMBER
  • 1988 MERCEDES BENZ 300E
Engine Mechanical problem
1988 Mercedes Benz 300e 6 cyl Two Wheel Drive Automatic 2000.0 miles

Car runs good for 15 to 20 minutes then start to miss badly In idle. But will if Ican get it move and run at high speed. It;s stalls at stops
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Thursday, January 7th, 2010 AT 8:58 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the following below:

Oxygen Sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Cap and Rotor

Note:If it doesn't apply, disregard it.
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Friday, January 8th, 2010 AT 3:45 AM

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