I have a 82 380 SEL (Euro), CIS E system. The engine will run perfectly one day then rough the next day at all RPM's.
Very intermittent. Somedays it will run smoothly for some miles and then begin to skip and run rough. The ABS light will come on when I hit about 5 MPH. Have not yet cleaned the sensor ports and this may be the problem. However, with many of the threads that I followed on OVP, their might be a connection to the OVP sensor. The problem is that I cannot find the sensor where it is supposed to be located per the MB manuals.Does this model have a OVP sensor? The plugs, rotor and cap are all new. Although they were ready for replacement there is no difference in performance. I have run Techron through to clean the injectors and still no difference. I have been using my wifes 300SD and my daughters 300E, but I am wearing out my welcome. I need help. Before I bring it in to my independent (I am stubborn) anyone have any suggestions.
TIA
John

I don't think your OVP relay is the problem. It would cause intermittant not regular ABS light malfuction. At the speed you are getting the light the system does a self test on the wheel sensors. You undoubtably have a wheel speed sensor problem.

I'm guessing that you have a spark plug resistor problem for your running problem. They result in intermittant single cylinder misfires. They are easily identified with an ignition scope.

Steve Thanks for the quick response. I did think that the ABS light was sensor related, especially when I did not clean out the sensor port when I put brakes in last week. I have a set of wires on the way and I will see what happens. Does the 82 380 sel (Euro) have a OVP sensor and where is it?

Thanks again

John

My 85 380sel (Euro) OVP Relay part number is 126 540 47 45 located in the fuse box with a red 10 amp fuse on top.
I hope this helps!