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Are these symptoms of a bad alternator ?

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Old 04-24-2009, 08:11 PM
  #1
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Default Are these symptoms of a bad alternator ?

First of all normally when the car is running, the voltage on the dash meter reads around 14V. Today I had trouble starting it but got it started and the voltage was around 12V with the car running. Then I drove it home and next time it didn't start. Had it jumped, and it started but the voltage was reading around 10V. When I turn on the headlights it drops to almost 8V on the indash meter. If I'm driving real fast on the highway it reads around 11V.
I think it's the alternator but want to double check to make sure. I thought the alternator was a gradual failure, with me it just seems like it died overnight.

If it is, I have an 01 2.8Q with ATQ engine code and 8GL option. That means it's a 120A. Is there a way to tell if it's Valeo or Bosch? (Do I have to change out the alternator completely, or can I just change bushings, etc?)

Also, is this job difficult to do on the 2.8L?

Thanks!
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Old 04-24-2009, 08:36 PM
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Sounds to be the alternator.. When mine went in the b5 i just changed it, i dont mess with the bushings. Sounds like your just runnin on your battery mostly
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Old 04-26-2009, 07:27 PM
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Default Is there a way to tell if the altnernor is valeo/bosch without taking it out?

can it be figured out from the options? I know that it's a 120A alternator based on the option code on the trunk sticker.
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Old 04-27-2009, 03:03 AM
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Not really. Most 2.8's had Valeo. You'll need to put the nose into service position and pull it out the front.
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Old 04-27-2009, 03:15 PM
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for anyone that cares....mine turned out to be a bosch one
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