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Home > Help Needed / General Tech Chat > denso alternator whining like a biatch..

MarkGTT

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Shropshire.

20th Jul, 2011 at 08:53:02pm

Hi, i have an annoying issue with my nippon alternator that has only just started to occur.

I spent some time last weekend balancing the throttle bodies, had the car running for around 20 / 30 mins with no problem.

Now every time i run the car it sounds like the alternator belt is slipping when i blip the throttle.

I removed the belt to check it was the source and yeah sure enough it stopped.

So i have 2 questions.

What could cause the belt to slip? as the tension seems correct..
Could it be the alternator its self, even though its new.. and the bearings spin freely??

cheers, Mark


tadge44

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Buckinghamshire

20th Jul, 2011 at 09:07:11pm

Is it a V belt ? If so and it has worn enough to touch the bottom of the vee then its likely to slip under load. v belts are meant to drive on the flanks of the vee

MarkGTT

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Shropshire.

20th Jul, 2011 at 09:09:23pm

sorry, should have said, its a grooved belt and that's new too.


Brett

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Doncaster, South Yorkshire

20th Jul, 2011 at 10:19:02pm

battery nearly dead, making the alt harder to turn?
tighten the belt as far as you dare and fire it up if it stops whining, at least then you know if it stops its the belt slipping

Yes i moved to the darkside *happy*

Instagram @jdm_brett


MarkGTT

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3249 Posts
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Shropshire.

20th Jul, 2011 at 10:24:54pm

Will charge the battery, it's slightly low.. Did really tighten the belt, with no luck :(

Sprocket

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Preston On The Brook

20th Jul, 2011 at 10:30:53pm

Water?

On 26th Oct, 2004 TurboDave16v said:
 Is it A-Series only? I think it should be...
So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'...


On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........

MarkGTT

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Shropshire.

20th Jul, 2011 at 10:37:15pm



On 20th Jul, 2011 Sprocket said:
Water?


In it or on the belt? I wouldnt think so.. No recent leaks

Edited by MarkGTT on 20th Jul, 2011.

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