My Geo slowly dies on me on the road and need a jump afterwards

Tiny
JSIM101
  • MEMBER
  • 1994 CHEVROLET PRIZM
  • AUTOMATIC
  • 106,987 MILES
My battery light on my geo comes on when I start my car but I have a new battery that I got 3 months ago I have done the usual alternator test when I got my battery for it by taking off one post and seeing if it would still start it did run. My issue is 1st the battery light cones on but goes off once I go for 40 mph for a set period of time and 2nd once it runs for about 15 min all lights in my dash comes on and the headlights will slowly dim out until my car shuts off and I need a jump to get it started this is my second battery I got but I dont think its that. Could it be my alternator or another issue?
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Tuesday, January 28th, 2014 AT 7:25 AM

5 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
When was the last time the belt and tensioner was replaced if ever? That may be your problem. Also check charging system, autoparts/tire stores do for free. Clean battery terminal ends as well.
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Tuesday, January 28th, 2014 AT 7:53 AM
Tiny
JSIM101
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I dont believe it has it was owned by someone else till last year and what do you mean by charging system
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Tuesday, January 28th, 2014 AT 8:00 AM
Tiny
JSIM101
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And do you mean the belt on the engine or alternator?
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Tuesday, January 28th, 2014 AT 8:02 AM
Tiny
HMAC300
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  • 48,601 POSTS
Have a pro look at this if you don't know what i'm talking about then you can't fix it either. The belt hooks to engine and turns the alternator. Which CHARGES your Battery
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Tuesday, January 28th, 2014 AT 8:04 AM
Tiny
JSIM101
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Ok I was not planing to fix it myself I just wanted to know what could be the issue incase they try to say it something else when I bring it to a shop
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Tuesday, January 28th, 2014 AT 8:10 AM

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