Is my alternator on the way out?

**ross85** · by **ross85** » Mon Jul 30, 2007 4:03 pm

There's a whirring sound coming from the left hand side of the engine which gets louder when the revs increase. I took the auxiliary belt off and ran the engine for a few seconds and the whirring disappeared so am I right in thinking the alternator needs replacing?

EY · by EY » Mon Jul 30, 2007 4:18 pm

Could be the alternator, or the tensioner roller. Have you tried giving them a little squirt of lube? Obviously avoiding the belt, and the internals of the alternator.

**ross85** · by **ross85** » Mon Jul 30, 2007 5:30 pm

Right, just come in from putting some lube on, left the car running for 5 minutes and there's no immediate improvement. The missus is taking it out later so will see if it's better when she comes back.

Robs-se · by **Robs-se** » Mon Jul 30, 2007 8:57 pm

mine does it, but it need the belt replaced because it slips slightly.
Try a new belt

Rob

**ross85** · by **ross85** » Tue Aug 07, 2007 8:21 pm

I swapped the alternator with the one on my other ecotec which was running fine and the sound is still there - how difficult is a belt change as it runs through an engine mount?

**ross85** · by **ross85** » Wed Aug 08, 2007 12:49 pm

Will be looking into it then, might end up taking it in if I don't get if fixed before I go on holiday.

**ross85** · by **ross85** » Thu Sep 06, 2007 9:08 am

Fixed it in the end, the top bolt on the tensioner housing had come loose

Is my alternator on the way out?

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