My 1980 wagon seems to rev higher than expected at 65mph. I installed a piezo-tach to get a look at engine RPM's. At 65 it runs about 3200 rpm, consistantly. If I count gear changes, I notice 3 shifts (when in Drive - I understand that in D the car starts off in 2nd). If I manually shift from 1st to Drive I count 4 shifts.
Tranny is properly filled, no abnormal noises either. I replaced both the CV shafts and while I was in the rear end nothing looked odd (had 2 split boots, that's why the change was needed).
Does anyone out there know what the proper RPM ranges are for a non-turbo 1980 300td? Is my wagon abnormal? Wondering if this car was geared to stay at 55 mph (which was the style in the early 80's, to save on fuel).
Thanks !
Jeromie