88 300E with near-stall RPM when in gear - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 06-19-2011, 09:40 AM Thread Starter
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Date registered: Jun 2011
Vehicle: 300E 1988 model with 230K miles
Location: Reseda, California
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88 300E with near-stall RPM when in gear

Hi Guys:
I have owned my 1988 300E for almost 18 years. It has 230K miles. Have been tying to maintain it in tip top. Most of the times, when I put the car in gear the RPM drops close to 500 and almost stalls. Mechanics replaced the Speed sensor, Crank Sensor, OVP, Fuel Pump Relay, Idle Valve, Vacuum lines, spark plus & wires, Catalitic converter. A valve job has been done about a year ago. The idle seems to be fine. But the stalling tendency when in gear presists. Some one told me that Transmission modulator valve can be the problem source. Besides this issue, everything else on this car except for the cruise control runs like a clock.
Anyone can think of something ?
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post #2 of 2 (permalink) Old 06-20-2011, 05:17 AM
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