Q. I have a 1992 Toyota Corolla with 105,000 miles on it. I am the second owner. I bought it used at around 40,000 miles. The concern I have is that I have replaced the alternator three times with an aftermarket alternator in the last five years, and when I looked at the history of the vehicle, I noticed the alternator was also replaced twice while the vehicle was under warranty with the original alternator.
Any idea if there is something that could cause the alternators to go bad? Or was there a problem with the alternators on these vehicles?
The only thing that seems odd to me on the vehicle is that when the turn signal is blinking (when other accessories are turned on -- headlights, wipers, etc.), the vehicle's RPMs seems to surge.
A. I could not find any pattern failures for your car on the charging system. The only thing I can suggest is to make sure you are getting a good quality alternator and that you have the shop check that every positive connection is good.
I would also have all of the ground connections checked and since you have had so many problems consider having a ground strap connected right to the alternator case to be extra sure that you have a good ground. I hope this helps!