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Ehy does my alternator charge sometimes but not all

Tiny
DHRACER6061
  • MEMBER
  • 1995 JEEP GRAND CHEROKEE
  • 185,000 MILES
My alternator charges sometimes but dies out slowly or doesn't work at all. If I spray wd40 it it it seems to work for a bit but doesn't say working
Friday, July 27th, 2012 AT 4:33 AM

4 Replies

Tiny
DHRACER6061
  • MEMBER
  • 49 POSTS
I have a volt meter hooked up at all times as the engine temp increases the voltage goes down until I spray wd40 and start it back up
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Friday, July 27th, 2012 AT 5:26 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What is the voltage readings exactly?

Roy
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Friday, July 27th, 2012 AT 10:45 AM
Tiny
DHRACER6061
  • MEMBER
  • 49 POSTS
The highest is 14.3 and it gradually goes down until it won't run
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Friday, July 27th, 2012 AT 5:08 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You most likelt have a failed alternator. Remove it and take it to a parts store and have them test it

roy
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Friday, July 27th, 2012 AT 5:21 PM

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