i have a 2002 wrx and my alternator failed twice, the first one is back in june 2009, i used a used sti alternator from a friend to fix it and that one failed too,a couple days ago, not even a year, what do you guys think? does my computer has to do with it? i have a TurboXS Utec piggy back, and my battery is brand new... pls help, thanks in advance

 

not even a year?... well it was a used alternator.
what I see is both alternators were old...... now if you replaced your alternator with a new or reman alternator back in june 2009 then you most likely have a problem. but since you replaced it with a old unit i'm not sure.

 

not even a year, i might end up getting a used one again, now looking on i club and nasioc.

 

you will have the same problem... peopel remove alternators for a reason just because its used doesnt mean it will last long..

 

It didn't last even a year because it was used for years already.
If you dont want to have this problem again in 6months to a year... you should save your time and money and get a new alternator or a reman alternator.
buying used alternators is a gamble.

 

Get one with a lifetime warranty or a reputable one from bosch. Alternators and batteries can be tested at kragen, pepboys, autozone etc

can i have your unwanted alternators?

 

i just bought one in autozone, now installed and have limited lifetime warranty,