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Old 02-09-2004, 09:48 PM   #1
Scooby Newbie
Member#: 50177
Join Date: Dec 2003
Location: Rice Central, NJ
2000 Impreza 2.5 RS
Silverthorne Metallic

Default Alternator Problem

I went to go get my factory battery changed (it's at least 4 years old seeing as that my MY00 RS was produced in late 1999) today. I took it to sears to pick up a diehard. The old battery was shot, so it was replaced. After installing the new battery, they ran a diagnostic on the charging system, and that's when I found out I had a problem. The sears diagnostic printout reads as follows:

Drain test OK
Vehicle started OK
Bad alternator waveform
Alternator inoperative
Replacment suggested

I'm guessing that there's either a problem with the alternator itself, or with the wiring going from the alternator to the battery to recharge it.

Has anybody else had a problem like this? If so, how did you remedy it?

BTW, my car is no longer under the bumper to bumper 36k/3 year warranty. So taking it to the dealership to get a new alternator put in is probably out of the question. I don't have $400+ to spend on the part and an extra $150+ on the labor.

Give me some input, thanks.
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Old 02-09-2004, 11:19 PM   #2
Scooby Guru
Member#: 22035
Join Date: Jul 2002
Chapter/Region: SCIC
Location: San Diego, CA
2014 Brocoma DCab
71 FJ40, 13 DRZ400SM


well, if your alt is indeed dead, then you would be running off your battery, which would not last long. if you have a DMM, put it across the battery, and check the voltage. it should be around 13-13 volts. then start the car, and let it idle, and retest it, it now should be around 13.8 to 14 volts. if it is not, then you probily need a new alt. and dont goto the dealer for that, just goto kragens or your local autoparts store (try to find one with a lifetime warentee) it should be aournd 100-200 bucks. take yours off, and install the new one.
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