BATTERY WILL NOT CHARGE

  • Tiny
  • z7one
  • 1989 Dodge Colt
  • 108,000 miles

I have a 1989 1.5l Colt, Battery will not charge. I have 15.5 volts coming off the Alternator but I only see 11.75 Volts on Battery when car is running. I think it could be voltage regulator but don't have any wiring schematic to know. Any help appreciated, Thanks.

Thursday, September 27th, 2012 AT 11:59 PM

20 Answers

  • Tiny
  • saturntech9
  • Expert
  • 28,875 posts

Where are you measuring 15.5 volts at the alterator?

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Friday, September 28th, 2012 AT 12:16 AM
  • Tiny
  • z7one
  • Member

I measured the voltage from the white large wire at alternator.

There are 2 other small wires, blue and yellow which I did not measure, I figured those went to instrument cluster, etc.

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Friday, September 28th, 2012 AT 12:29 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,875 posts

Engine off key on you should have battery voltage at the two white wires with a red stripe and the red wire to the alternator?The white wire goes to the gauge.

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Friday, September 28th, 2012 AT 12:40 AM
  • Tiny
  • z7one
  • Member

The two white wires go to the same lug and it has 12.45 volts. I have had the battery on charge so it is up a little from my earlier post.

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Friday, September 28th, 2012 AT 12:51 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,875 posts

Alright does the red wire have battery voltage also?

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Friday, September 28th, 2012 AT 12:56 AM
  • Tiny
  • z7one
  • Member

I don't have a red wire. Please see attached picture.

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Friday, September 28th, 2012 AT 1:09 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,875 posts

Iam justing going by my wire diagram I have I would say the blue wire should have battery voltage also and the yellow wire is for the battery light.

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Friday, September 28th, 2012 AT 1:16 AM
  • Tiny
  • z7one
  • Member

12.06 on yellow wire, nothing on blue

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Friday, September 28th, 2012 AT 1:27 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,875 posts

Do you have a colt or colt vista wagon or sedan?

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Friday, September 28th, 2012 AT 1:37 AM
  • Tiny
  • z7one
  • Member

Yes it is. Sorry I didn't mention that earlier.

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Friday, September 28th, 2012 AT 1:41 AM

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