I have a 1986 300E,which after being driven for 30 to 40 mins., tends to act like it wants to stall(but it never seems to),it tacs at 10500rpms and gives off black smoke out of the exhaust.I've changed the fuel regulator,fuel pump,spark plugs,O2 sensor and the over voltage protection relay. It has cleared up awhole lot, but every now and then it acts up the same way but without the black smoke to the same degree. I'm being told to change the coolant temperature sensor. Does this sound right? I'll admit I'm no expert on this subject.

If you throw enough parts at it, you are bound to hit it some day. A good tech would be worth the trip here.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Rich:

If you need a good MB tech around the area, drop me a line. The techs are great, in the business for a long time, and not that expensive


Agron
1989 300E (107k miles)