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Lighst and dash lights flashing on my Blazer.

Tiny
DOVIER
  • MEMBER
  • CHEVROLET BLAZER
I have 1997 chevy blazer, 4x4, 4 doors.
the problem that is that head and all lights inside the car go up and down, sort of like they loosing
some kind of power. At first I Noticed my belt tenser jumping up and down and repaired that, but now my alternator is making a funny noise ;I took it off and went to auto zone to test tha alternator ; but they said it was good. SO my CAR lights keep going up and down like there is not enough juicy coming to them and like I said before, the alternator is making a funny noise like rororororro.
Any way I HOPE YOU GUYS UNDERSTAND WHAT I AM TALKING ABOUT.
THANKS DOVIER.
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Friday, December 15th, 2006 AT 8:21 PM

1 Reply

Tiny
BOOTDOG
  • MECHANIC
  • 665 POSTS
Let me say if the alternator is making noises, then replace it. The noise you describe is the bearing in the pulley going bad. Now about the lights dimming, make sure that the battery connestions are tight and free from corrosion. If so then make sure the battery voltage is at 12 volts. If so you'll need to make sure the vehicle is charging properly. In order to keep a battery charged, it needs to be around 14 to 14.5 volts while running. Take the vehicle to advance auto and they'll check your battery and charging system for free. Good luck :)
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Saturday, December 16th, 2006 AT 3:45 PM

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