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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Battery and Brake Light on

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Old Nov 26, 2008 | 06:08 AM
  #1  
91FREERUNNER's Avatar
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Battery and Brake Light on

Well i did a little 4 wheelin yesterday and after i went through a puddle the battery light and the brake light came on..... However it was charging at 12.6volts and didnt drop with the lights on also the brake light came on like the ebrake was pulled but it wasnt? maybe something got wet??? any help would be great i gotta drive upstate in a few hours
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Old Nov 26, 2008 | 06:15 AM
  #2  
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From: St. Louis, MO
12.6 sounds a bit low. I think it should be around 14-18. with the engine running remove the positive battery cable. If it dies you got a bad alternator, which is what I would suspect if you got it wet and muddy.
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Old Nov 26, 2008 | 06:22 AM
  #3  
tj884Rdlx's Avatar
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From: ATL!
sounds like you got water in the alt. take some CRC to it
http://www.crcind.com.au/catalogue.n...r?openDocument

then some compressed air. test the alt again and see if you're getting closer to 14v. otherwise it may be time to replace.

the brake light on is just in conjunction with the batt light to get your attention to low charge condition. good luck bro!
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Old Nov 26, 2008 | 06:22 AM
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From: Downeast, ME
if its only putting out 12.6v the alt is dead. probably got mud/water in it. don't pull the cable while the engines running, it can do damage to the computer. check the voltage, and then start it and check the voltage. if its the same that would indicate the alt isnt charging anything. also the lights mean the battery isnt charging
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Old Nov 28, 2008 | 07:36 PM
  #5  
91FREERUNNER's Avatar
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well you were all right swapped out the alternator for a new one that cost me a pretty penny $150.00 also did a new battery for $80 and some terminals but the lights are gone and shes chargin its all good now
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Old Nov 29, 2008 | 03:24 AM
  #6  
Bigblock's Avatar
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From: So MS
New brushes are like 20 bucks and easy to put in.UPS me your old alt!
Bigblock
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Old Nov 29, 2008 | 05:28 AM
  #7  
91FREERUNNER's Avatar
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lmao figures wish i wouldve known the old alt went in for core charge plus now i got a lifetime warranty for next time =)
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