Few more tidbits of information, I decided to play around with unplugging a few components. When the 02 sensor is unplugged, the idle drops to the 800 range but surges terrible, almost stalling at time. Once plugged back in it returns with minimum surging back to 1100 rpms.

When I unplugged the OVP with the 02 sensor plugged in, the car's idle speed increased to about 1300 rpms. When plugging it back in the car almost died out, then revived itself and continued to run around 1100 rpms.

The car was just sitting idling so the temp started to rise. Righ around 100 degrees the fans kicked in, and it was about time for me to leave to go back to work. As I was pulling out of the parking lot I was in, the RPMs were at 800 and the car was running smooth! After it cooled down a bit and I got back to the office and it was right back at 1100! Damn though I got lucky!!

Sound like anything inparticular? I plan on buying a multimeter this weekend if I can't figure it out.

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1983 240D 4spd
1984 190E 5spd
1987 300D (sitting for a year or two)
1989 Toyota Camry 5spd (current DD)