Date registered: Feb 2010
Vehicle: 1989 190E 2.6 MB sedan 140,000K
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1989 190e 2.6 check engine lite/power loss
My car starts well, but after running for various lengths of time, the check engine lite comes on, followed by a brief revving, and then near stalling. After time it will eventually stall. Can happen after 1/2 hour, or 10 minutes. Restarting is difficult. If the car is put in neutral and I step on the gas to keep the RPMs up, it wont stall. It seems worse when the engine is warm
The onboard computer is good- was checked professionally- and the relay overload was replaced. Have not taken it in to have the computer codes checked. (trying to keep costs down)
What's the next step? Any idea what the problem could be?
PS neighbor ex MB mechanic is stymied too!