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Battery warning light

Tiny
MJREILLYCFC
  • MEMBER
  • 2007 RENAULT MEGANE
  • 32,000 MILES
Hi I had a new alternator put in a few weeks back and since then after a couple of weeks my battery light comes on not as soon as I start my car but after I've been driving for a while.I've replaced the battery but problem still not gone away.I think the alternator is working as when car is stationary the volt is 12.5 and when started goes to around 13.7. It seems to me that the alternator for what ever reason isn't working or charging properly whilst driving but I'm no expert and new your help thanks
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Sunday, January 31st, 2016 AT 9:56 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The alternator is the issue. It has failed. The voltage should be 14 to 14.5 at idle and 1500 rpm.

Roy
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Sunday, January 31st, 2016 AT 11:05 AM
Tiny
MJREILLYCFC
  • MEMBER
  • 2 POSTS
Cheers mate I did think that but just wanted to be sure so will be ringing the garage in the morning to sort it out thanks
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Sunday, January 31st, 2016 AT 11:10 AM

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