1991 Geo Prizm alternator

Tiny
MONSTERMAN4
  • MEMBER
  • 1991 GEO PRIZM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 165,000 MILES
I have replaced the alternator several times in this car. Is their a cure for this problem or is this just a bad design problem.
Saturday, February 2nd, 2008 AT 10:19 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Could be the replacements are bad. The original alternator is a good unit.

Could also be there that one of the rock shields is missing allowing water to get to the alternator, or you have a bad ground wire somewhere, or there is an exhaust leak blowing hot exhaust on the alternator, or the wiring to the alternator is frayed and intermittently grounding, etc. Etc.

I have two Prizms, 136,000 and 145,000. Both with the original alternators.
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Monday, February 4th, 2008 AT 2:23 PM

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