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Pop and thumping in Drive - 740 automatic turbo 700 1988

posted by  someone claiming to be DSG on  Sun Apr 28 14:45 CST 2002 [RELATED]

In my 1988 740 turbo, I was on the highway, when I felt/heard a muffled "pop",then occasional thumping under my seat. As I slowed, it got more intense, and the throbbing was at a regular interval, respective to the rpm's, etc... I was told this could be the Universal joint gone bad, and was wondering if it isn't the motor mounts, ot transmission mount. Could this be the fabled Tailshaft bushing seal? Hope not the transmission itself! Yes, the gearshift was jumping up and down a bit too. Only happens in drive or reverse, not park.
It got to be very violent - as if someone were hitting the underside of the car with a sledgehammer. Any suggestions or help is appreciated - I can't afford a whole transmission replacement! Thanks! DSG






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New Pop and thumping in Drive - 740 automatic turbo [700][1988]
posted by  someone claiming to be DSG  on Sun Apr 28 14:45 CST 2002 >


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