You car's alternator charges the battery and makes its electrical system work while driving.
So, how do you know if it's time to replace it? There are signs you will notice when an alternator is starting to go out. If you pay attention to them and head to a mechanic you're less likely to find yourself stranded one day when your car won't start at all.
One sign is if your vehicle suddenly becomes hard to start. You turn the key and the engine just won't turn over, until finally, it does.
Another sign is when your accessory lights become dim, according to online automotive resource AxleAddict.com. Accessory lights are the ones on your dashboard, dome light, headlights and clock/radio. If they dim when starting up your vehicle, it could be your alternator starting to go. Also notice if your accessory lights dim or appear to be blinking when you step on the accelerator.
If you battery keeps dying, it may not be your battery that
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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 co
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