Our 1986 190 2.3 8valve shuts off after it reaches operating temperature. I have replaced the Ignition Module and the fuel filter. Still shuts off, I can run the fan with heat on high to go a little further but when it hits 80 degs it just turns off. After a few minutes I can drive again. Pleace. any sugestions. steve

might be engine temperature sensor? might short or create open circuit once normal temperature is reached.

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod

Hi
For quite a few people such symptons have been caused by a faulty crankshaft postion sensor.
Good luck, Bruno

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1992 300TE 160 kmiles

When engine is warm, it goes into loop control monitoring lambda via the O2 sensor. I would check this sensor, since a really bad reading from this would cause the ECU to command the EHA to send the mixture outside operating parameters. Bad output from the ECU to the EHA valve might also be a cause.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7

thank you very much, I'll give it a try. steve

just cuts right out? does it restart easily?

OVP and Fuel pump relay have both been culprits for this in my experience.

Although the fuel pump relay will ussually not restart for a while.