Just bought a 1987 300e gas 3.0 inline 6 and it has some issues. It's hard to start when cold but once warmed up runs smoothly and starts easily. Very slow acceloration and once it hits 45 MPH it creeps to 60 MPH but won't go over 60. Transmission does not appear to be slipping as tack moves with speedometer. I have found similar posts in the archives but no specific solutions that worked and if they ever solved their problem I couldn't find where they came back and told how they solved the problem.

Anyone have an idea what could be wrong or where to start looking for the problem. Thanks, Tom