I have a 1999 996 2wd with tiptronic. When turning right at just about any speed or acceleration I am getting a repeating deep grinding sound in the left rear area of the car. Not a clunking sound but more like a bad wheel bearing that only grinds with lateral force on it. Going straight is no problem and turning left no problem, no clunking under any conditions. Been to two shops that specialize in Porsche, both can get the noise to happen, one can't find anything and says to wait for failure and the other says the rear left axle is bad. Any thoughts? __________________ This post was auto-generated based upon a question asked on our tech article page here: Porsche 911 Carrera Common Engine Problems - 996 (1998-2005) - 997 (2005-2012) - Pelican Parts Technical Article
Discussion summary
YOUR RESEARCH996 Tiptronic Grinding Noise when turning
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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1 matching discussions · 4 captured posts examined · 0 partial discussions
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
- Pelican Parts: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261027T033922Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My over the net diagnostic guess would be wheel bearing, OR differential fluid. - Casey
happened to mine yrs ago ... it ended up the CV Axle assembly worn bearing inside.. cheap and easy to fix . hour or so
Hi, sounds like your transmission mount is worn out & collapsed allowing metal to metal contact. I've seen quite a few of these, not that easy to spot while doing a general underside check. You need to pull back the rubber buffer pads either side of the mounting and point a torch in there.
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