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Battery power drained in 15 mins - V8

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beattiedh:
Hi All

A little guidance please. 3.5V8 EFi

Popped out today and when parked I noticed the engine revs dropped and the rev counter stopped.

When I turned the engine off the battery light came up.

when I restarted the engine the alternator was making a small noise and smelling slightly. Managed to get home but the battery light is still on and the rev counter not working. The alternator was then smelling a bit more and was quite hot.

The battery is now totally dead.

Is there a short that is draining the power or has the alternator gone and would it cause such a power drain?

She has been for a little swim recently, would that have caused this?


Any help would be great.

yours

Duncan

Budgie:
It does sound like the alternator is U/S but exactly what has gone wrong I'm not sure. If you were running lights, radio and starter etc then it may have drained the battery that quick, how old is the battery? If you've had it for a few years then it may not be in best condition itself.

If the photo is the deepest you went wading then I wouldn't think that water got near the alternator on that trip, there again, did you go through deeper or at a faster speed? That may have put water through it but again, it shouldn't have cause a failure.

If you've got an auto-electric shop near you then I would take the alternator in for testing and see what they say.

muddyweb:
I'd go for the alternator too... the fact that the tacho stopped is probably related too.

In any case, get your battery on charge ASAP... if you leave it discharged it will be ruined in a short time.

Disco Inferno:
i'd also go for alternator -  the same happened to mine a few months ago

battery light on when engine off and and getting really really hot

beattiedh:
Hi Guys

Many thanks for the advice

Will go and check the alternator.

Thanks

Duncan

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