Mechanics

WHINNING NOISE FROM UNDER THE BONNET, ICREASES WITH REVS, SOUNDS LICK A PULSING DIODE, COULD IT BE THE ALTERNATOR, ALTHOUGH NO WARNING DASH LIGHTS AND SHOWS NO SIGN OF LOW BATTERY?

2006 Renault Modus • 21,000 miles

I have had the alternator bearings checked out and ok, with the belt removed the noise stops. Belt drives alternator & air conditioning drive motor. Although the belt tensioner pulley spins ok without noise, going to try a new one? Any comments
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Rogerjc
April 3, 2012.



Also check the AC compressor

Rasmataz
Apr 3, 2012.