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YOUR RESEARCH996TT - Rattling Noise from Gearbox?
Reported or suspected cause
loose heat shield
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
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Leading evidence: 'loose heat shield' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'loose heat shield' (1 discussions; 1 report identifying it and 0 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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911uk: 1 discussions
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I have an 02 996 Turbo Tiptronic. Recently I have noticed a rattling noise coming from under the car when it is being driven in 3rd, 4th or 5th gear at 1500rpm. As soon as the revs pick up the noise disappears. It sounds like something under the car is rattling due to vibration at that particular engine speed (1500 rpm).
I have taken it to an indie and they say the noise is coming from the gearbox and the only solution is to replace it. They don't do repairs on gearboxes here in Dubai...they simply swap out.
Any advice or guidance is appreciated.
get one, quickly?
joking aside apart from the noise does it effect anything else? all the 996 turbo's I've stood near rattle at idle, layshaft I think?
It sounds like there is a slight driveline vibration that sets up the chatter in the box. Is it better when the car is cold? If yes thinking about the ambient temperatures in Dubai, it might be worth thinking about a slightly higer viscosity oil.
Alternatively try to avoid listening to it, and accept a bit of noise per Senoj's comment.
Regards Big Bob
Nothing else is affected. It runs exactly like it did before the noise appeared. The noise is very noticeable at that particular engine speed. Can't ignore it...
Sounds like the rustle of a wallet or the spreading of a cheque book, or the peeps of the PIN entry on a Credit Card Machine to me then
.
Regards Big Bob :bye:
Is it defo gearbox related? Not something like heat shields as these tend to go after 5 or 6 years on the Turbo from what I can gather and give rise to a rattling noise at low revs.
Not a Porsche, I know, but I have been tip-toeing around in my Isuzu Trooper for weeks because of an horrendous rattle that I was convinced was the gearbox about to self-destruct.
Turned out to be a loose heat shield
But you would not believe how loud (and terminal) it sounded... So you never know - especially at a particular rpm, which makes it sound like a resonant frequency of something loose?
