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please help - whistling noise


dan2009
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Hi, i have a 2005 120d sport which has covered just over 80000 miles and just the other day whilst driving i noticed a whistling noise comming from the engine, i can only hear it after about 1800 rpm. i firstly assumed it was the turbo as you can hear the whistling spoling up the spooling down as you release the accelaration. i handed it in to my local dealer who said the noise was not coming from the turbo and they think its coming from the heater box, and quoted me £768 to investigate the heater boxand also said they cant gurantee after spending that amount of money they will be able to locate the problem.

Please can somebody help me? Has anybody had the same proble and how can it be resolved and what was causing the whistling?

personally i feel its the turbo, i have visited 3 local mechanics who have all said tht most likely its the turbo as the bearings on it have probly gone.

Many thanks

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