My 86 300E runs super. It is the 89 engine I bought from John Heff about 4 years ago. This week I had my first issue with it. I drove it to my bus park to get my school bus. Parked the car at about 6:30 AM, temp about 28 degrees. Came back 2 hours later, temp is up to 36 degrees outside, car started instantly but would only run up to 1500 rpm. In gear with manual transmission, it would not pull but if I got off the throttle, it idled very rough. I tried to keep it running, it never did stall but came close. I kept on pumping the accelerator maybe for 30 seconds, maybe more, it was running rough and then instantly, maybe after a minute of fussing with it, it cleared up and ran great. Now today, leaving the bus park it did the same thing, but it cleared up in perhaps 30 seconds, then I made two short stops about 10 or 15 minutes each, (engine now is fully warmed up) and each time I had to wait and pump the accelerator 10 to 15 times I think in 15 to 20 seconds, while it acts up and really runs terrible. Then instantly it clears up and every thing is fine. Anybody have a good idea for me? I am very interested in correcting this problem.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

Well, I think I found the problem. I checked all the engine mounted sensors and found the one at the side (rear) of the head with a twin pair of wires attached too it and it was loose. It was not pressed on all the way. It was a very quick fix for a very annoying problem that just came out of the blue. But the problem seems to be resolved completely.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

You wouldn't have found it if you didn't post your issue here. That's the way it seems to work Awesome!

Isn't that the truth! But after 3 days of various running around and numerous stops and starts the problem is really gone. Man, and as you can well imagine, it is not nice to be close to the head of the line with about 300 bus drivers following and in a hurry to get home, and your car doesn't want to run. Tough spot to be in!

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!