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Old 3rd January 2009, 05:28 PM
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300 TDI Noise

Just recently I have developed a high pitch whirring sound which is not very loud when my 97 TDi Auto Discovery reaches around the the 2250 rpm mark , it's tone and speed increase and decrease with the rpm of the engine , now the obvious thing I can think of is may be the turbo is this normal or is something on the way out .
It only does this with the car in gear and driving , sat in neutral and revving the engine does not produce the sound .
It does appear to be coming from the left hand side under the bonnet somewhere but it's hard to tell when driving along......
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Old 3rd January 2009, 05:35 PM
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Quote:
Originally Posted by bondb1 View Post
Just recently I have developed a high pitch whirring sound which is not very loud when my 97 TDi Auto Discovery reaches around the the 2250 rpm mark , it's tone and speed increase and decrease with the rpm of the engine , now the obvious thing I can think of is may be the turbo is this normal or is something on the way out .
It only does this with the car in gear and driving , sat in neutral and revving the engine does not produce the sound .
It does appear to be coming from the left hand side under the bonnet somewhere but it's hard to tell when driving along......
A intercooler hose or hose,s , A hole in the intercooler maybe
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Old 3rd January 2009, 05:36 PM
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Check none of the turbo hoses has a crack, get someone to rev it for you while you feel for air leaks around turbo hoses, don't need to rev to high, Regards Frank.
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