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.

Do you
have the same problem?
Yes
No
Thursday, September 27th, 2012 AT 11:59 PM

20 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,884 posts

Where are you measuring 15.5 volts at the alterator?

Was this
answer
helpful?
Yes
No
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.

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:29 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,884 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.

Was this
answer
helpful?
Yes
No
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.

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:51 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,884 posts

Alright does the red wire have battery voltage also?

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 12:56 AM
  • Tiny
  • z7one
  • Member

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

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:09 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,884 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.

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:16 AM
  • Tiny
  • z7one
  • Member

12.06 on yellow wire, nothing on blue

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:27 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,884 posts

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

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:37 AM
  • Tiny
  • z7one
  • Member

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

Was this
answer
helpful?
Yes
No
Friday, September 28th, 2012 AT 1:41 AM

Please login or register to post a reply.

Similar Questions