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Starter Motor or Battery?


Mamuci

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It will most likely be the battery. Easy to test, jump it from a known good one and if you get the same result then it could be the starter motor.

If it turns out to be a poor battery it's possible that the alternator could be faulty and either not charging it or even draining it while parked.

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Other possibility is a earthing problem which will cause it still to turn over slowly even when jumping it on the battery terminals. Seems likely to be the battery though, when was it last changed?

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15 hours ago, Mamuci said:

Hi Thanks for messaging never been changed as far as I know.... so strange it will start but very very slow 

That's why I suggested the earthing problem as this limits the current to the starter making it slow, but doesn't drop the voltage on the battery so everything else works fine. Could you try measuring the battery voltage when you try to start the car? Places like Kwikfit/Halfords will test the battery for you and you then get to laugh at the quotes they give you before buying off the Internet?

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