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Author Topic: Alternator charge fluctuating  (Read 1221 times)

Offline MaXXeH

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Alternator charge fluctuating
« on: 09 February 2014, 06:55 »
I have a problem with a AGU not charging correctly and the battery keeps going flat.

using a multimeter with the car running the V goes to 11.9v - 14v  11.9v back and forth.  You can hear the change in the engine note.

any ideas?  not sure it is a short or alternator is dead.

 
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Offline sharki786

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Re: Alternator charge fluctuating
« Reply #1 on: 09 February 2014, 07:25 »
Sounds like the alternator has had it. Other way of checking it would be start the car and disconnect the battery while engine is running. I know with older cars you can do that but not sure with a mk4.
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Offline Wazzzer

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Re: Alternator charge fluctuating
« Reply #2 on: 09 February 2014, 18:23 »
Funnily enough I have a 120amp alternator for sale lol
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Offline itavaltalainen

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Re: Alternator charge fluctuating
« Reply #3 on: 09 February 2014, 20:09 »
or just replace the shot voltage regulator on it for 10£
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