What is causing my engine to sometimes rev really high, sort of "freewheel," yet the transmission never came out of gear? If i let off the accelerator for a sec, let the revs come down, then it "re-engages" properly.
It's a cummins. Not sure which one, but can check tonight. Regular roadranger 10spd manual. NOTE: This is NOT a super 10. Just a regular 10spd manual.
Volvo, if that matters.