1989 300E

The car had been sitting for about 6-8 weeks and when I attempted to start it, the symptoms were as follows:

-Engine would turn over but would not engage.
- After 30-40 cranks, the tach would register a reading of 200-300RPM
- 30-40 additional cranks and the tach would read 500+ and would start. It would run rough for several minutes until warm whereby the tack would still read 600-700. I was still running rough.
- Once the car is actually driven, it runs very smoothly and with power.
- The car has very low mileage on it and I took it into a mechanic today who the proceeded to diagnose saying that it was the only way to eliminate certain items. I assured him that the electrical was fine but he replaced the rotor and the distributor cap and checked that the cold sensor was working.

After he presented me with a shocking bill, I advised him hours later that I was still having the same problem.

He said his next step would be to check the EGR than the fuel system to see if it was working (pressurized).

I have read up on the EHA adjustments and the OVP but don't know where they are located. Any assistance would be appreciated from a very novice DIY.

Sorry, I forgot to tell you where the OVP was!

Look at your battery from the front of your car, walk to your battery, now look under your hood behing the battery, you will see two metal boxes with very large connectors strapped to the top of them, now put your have on the front one, now slide it to the right, and down, your hand should hit the ovp relay!