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Old 04-22-2003, 11:17 AM
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Question Engine Stalling Still A Mystery

My '88 300 TE (wagon) (125,000 mis.) has had a new fuel pump relay, crank sensor relays, and ignition control module replaced in the last few months, and a new fuel pump put in in '99, but the engine still dies while driving, from 30 mph to 50 mph and also at a complete stop. When it dies, the dash lights all come on, and it can be restarted approx. 5-10 seconds later (if you try and turn it over immediately after stalling, it won't--it sounds like it's flooded). My mechanic is completely stymied. Anyone out there know something that hasn't been covered yet in this discussion?
I'd really appreciate it. Thanks.

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Old 04-22-2003, 01:09 PM
pesuazo's Avatar
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Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580

0.- Diagnose thru terminal 3 of module control (Duty Cycle)
1.- Check the fuel pressure regulator
2.- Check the EHA
3.- Microswitch
4.- Ignition Coil (also the wire)
5.- Cap & Rotor
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
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Old 04-22-2003, 05:04 PM
yjamous's Avatar
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Join Date: Sep 2002
Location: Dubai
Posts: 36
I don't know if your model has an OVP (Over Voltage Protection) relay. If so, it might be the cause.
I had these symptoms on my a 1993 , 220 E model.

I hope this would help
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Old 04-22-2003, 06:51 PM
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engine dying

My OVP relay was replaced recently. My cruise control has been erratic, so am checking that lead out.
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Old 04-22-2003, 07:01 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,806
Search for threads started by Ron Johnstone. He has a late 80s 300TE that had similar problems. He changed just about everything in the fuel system to no avail. I don't remember what finally got him back on the road.

91 300SE
87 300SDL
83 300SD

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