This is my weekly post! I am addressing and repairing each item one at a time. I've owned my 92 300sd for five months and driven it over 10000 miles. It is very dependable. SInce owning it, it has had a glitch in the tach where it will drop to zero for a few seconds and return to the proper RPM. Does not effect the engine operation, and is not effected by bumps in the road. It just randomly cuts out and drops to zero. The previous owner had two wiring harnesses replaced at the dealer to correct this, with no improvement. ANy ideas?
Thanks!