P38 Diesel new alternator noise

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vtwin

Active Member
Posts
125
Location
UK
Fitted a new alternator and its got a background noise like a fan howling when driving, I did see on a general search that it might be the wrong number of V's on the pulley any body heard of that?
It does get hot when all electrics are turned on at idle, but does charge ok.
It was from a 4x4 garage, no makers ID on it so not original, taking the car in tomorrow so they can listen to it.
Just wondered if anyone had any ideas before I take it in. Murray.
 
That doesn't sound right.

The viscous fan will howl on startup but it'll die down in a minute or so as it heats up. Alternator and aux belt shouldn't make much noise. The tensioner arm at the top right tends to crack and then pulls to one side and then the belt can rub before it disintegrates. Hope it isn't that.
 
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