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6.9 help

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  #1  
Old 11-04-2010, 06:29 PM
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Question 6.9 help
ok so when i start my truck i notice that all my lights dim when it starts, and when i give it throttle the lights get brighter. Im thinkin it could be the alternator is bad or that my battries are shot. Any ideas?
 
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Old 11-04-2010, 06:32 PM
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test the alternator. mine did it some too but it didnt bother me
 
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Old 11-04-2010, 10:02 PM
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i would say alternator
 
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Old 11-08-2010, 10:49 PM
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I've had that issue caused by bad grounds and a bad voltage regulator.
 
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Old 11-14-2010, 12:03 AM
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what would be the best size alternator to get?
 
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Old 11-19-2010, 07:17 PM
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if u test the alternator also have the battery tested... if those are good then you have a bad chassis ground...
 
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Old 11-19-2010, 09:51 PM
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just get a 130 amp and get it over with!! haha. napa carries them and mine works perfect!!
 
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Old 11-22-2010, 07:40 PM
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well i tested the battries after a full cahrge and one came up round 12 and the other didnt even hit 8 so tht could be my problem too. but i also need new cables cause the ones i got now are shot.
 
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Old 11-22-2010, 08:37 PM
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If the batt tests bad, no cable will help that! You definitely have your problem!
 
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Old 11-23-2010, 10:19 PM
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deo the voltage regulator cuz i did the same went through 4 batts and 2 alt turned out the frekin 10 dollar voltage regulator
 
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