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Car turns off when battery unplugged, is alternator only thing?
This is a follow up question based on the previous question i had posted.
I have a 2002 Mitsubishi Eclipse GT (Optima redtop battery). When i removed the positive terminal from the battery the car instantly died. Even after getting a boost, the battery doesnt recharge properly and the car ends up dieing while driving it a bit.
Would the only thing to cause this be the alternator? Are there any other posisibilities that might also cause the car to turn off if the battery is unplugged?
Could it be that the alternator belt might be a bit loose?
Thank You,
The other reason I am asking this was becuase when this problem first started, I took the car to get an AVR test at Mitsubishi, and they said that the alternator and battery was okay ??? Then the car was running fine for arround a month. And now its doing it again.
9 Answers
- 1 decade ago
Strong possibility, but your car may have a separate voltage regulator like a Ford or Chrysler product. The age of the car indicates that the alternator brushes may be worn out, or a bearing may be worn. In any case, if it were mine, I'd replace the alternator and if that didn't take care of it, look for a regulator on a fender or firewall. Replacing the alternator is a must in either case if the car has over 70K on it-its cheap insurance. Oh, and replace that serpentine belt if you see more than one or two cracks per inch on the ribbed side, on any rib or combination of.
- Anonymous5 years ago
It's absolutely the alternator. The vehicle should stay running if you pull the battery cable off. When you replace the alternator, you should replace the battery too because of the strain it's been under with the bad alternator.
- bobwebLv 71 decade ago
" Warning: Never disconnect a battery cable while the engine is running to "test" the alternator. Doing so can cause high voltage spikes that can damage the alternator as well as other electronics."
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- 1 decade ago
the battery starts the car. after that the alternator runs the car. so answer to your question is the alternator is bad. replace it.
- Anonymous1 decade ago
It's possible the belt is loose but it would probably slip and make a sqealing noise- I'd say replacing the alternator is your best bet...
