Following this thread waiting to see my question pop up, but it hasn't. My 82 300 td goes great on the highway, all day long 75-85. Loves it. But when I get off into town, it suddenly goes dead. it barely idles, foot to the floor, and the solution that works is to pull into a parking lot, shut it off for 5 minutes and then start it again. It then runs a little rough, but will accelerate and drive okay. It's like it's either starving for fuel (but how did it go 75-80 if that's the case?) or somebody unhooked the accelerator linkage. Really weird. Doesn't happen if I drive under 55 or just a short distance at any speed. Only after prolonged high speed cruising. Any ideas? I've changed all filters, new injector nozzles. Car has 450k on it, always MB serviced until last year. Thanks!
-pyro