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Charging problem

Tiny
MCGUIRE7498
  • MEMBER
  • 1990 HONDA ACCORD
  • 4 CYL
  • FWD
  • MANUAL
  • 300,000 MILES
My alternator wont charge when lights are on
Tuesday, December 21st, 2010 AT 1:38 AM

5 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
You probably just have a weak alternator the first thing I would do is have the alternator and battery tested. Also make sure your battery cable's are clean and tight.
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Wednesday, February 3rd, 2021 AT 4:33 PM
Tiny
MCGUIRE7498
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  • 3 POSTS
I done all that the batt is new and the alt is puttin out 14.57 at night when I cut the lights on it will not charge it kills the batt in no time?
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Wednesday, February 3rd, 2021 AT 4:33 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So what does the battery voltage read with the light's on?Are your battery cable's clean and tight?Your going to have to check the voltage going into the alternator with the head light's on and see where your loosing the supply voltage into your alternator.
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Wednesday, February 3rd, 2021 AT 4:33 PM
Tiny
MCGUIRE7498
  • MEMBER
  • 3 POSTS
With the lights on it reads 12.47 and drops especially when u throttle it up when I pull the headlight fuses the light on the fuse I pull only goes dim not out?
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Wednesday, February 3rd, 2021 AT 4:33 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
I would make sure you have a good ground to your headlight's.
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Wednesday, February 3rd, 2021 AT 4:33 PM

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