'88 900 Turbo Auto - Thumps on hard acceleration - Saab 900 Bulletin Board - Saabnet.com
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'88 900 Turbo Auto - Thumps on hard acceleration
Posted by ALPO (more from ALPO) on Sun, 24 Jun 2001 12:28:16
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My SiS (convertible) makes a thumping sound when accelerating from takeoff or during passing. Also when the auto tranny shifts. Replaced lower ball joints - upper joints tight as are the control arm bushings. Removed half shafts and the outer CV joints were free and tight (OK) and the tripods were tight. I greased them and reinstalled and still thumped.
Exhaust system has a lot of free play so it is not hitting. Shock mounts are OK. Wheel bearings are OK.
Could it be the inner driver? There is no radial play in it but the outer cover is loose from the tripod housing - doesn't leak though.
Help!! (Thanks)
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