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what happened after a cambelt change?

Discussion in 'Audi S4/A4/A4 Cab (B8 Chassis)' started by vw754, Sep 4, 2013.

  1. vw754
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    vw754 vorsprung Durch Technik

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    [Sep 4, 2013]
    I changed cambelt,and waterpump idlers,rollers,etc on my 2.0 tdi B8...........car starts fine all ok,get a buzzing noise when i rraise the revs around say 1500 rpm (aprox) this noise/sound only dissapears when cars on idle..........i disconnected this unit (see the link) and the sound disappears,going to put front panel back on the car in the morning,,,,,,,,,,why is this happening,engine was all locked and as a precaution,i even marked everything,and its all bob on,what is wrong? ...........heres the link:BOSCH 0928400706 Pressure Control Valve Regulator VW Audi | eBay
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