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If your battery is not fully functioning and needs to be replaced, it can make the alternator work harder. This could cause a brand new alternator to go bad. Check your battery, if the battery is not the issue, return the alternator, it should have a warranty on it for at least the first 30 days.
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What makes the alternator sensor fuse blow?
it can be caused by a bad alternator
Why is your alternator overcharging after you replaced it and it ran fine for a week?
It is probably a bad voltage regulator. Sometimes they are located in the alternator and can go bad in a new one. On Ford vehicle the voltage regulator is separate from the alternator.
What makes an alternator go bad?
Internal parts can wear out or burn out.
Brand new battery won't stay charged in my 1998 cadillac?
The battery is bad or the alternator is not putting out the correct voltage and is bad.
Is an alternator bad if the headlights click on and off and car makes noise?
No not necasairly
What causes your alternator not to charge?
A bad belt, a bad regulator in the alternator or bad brushes in the alternator.
1983 t-bird alternator that has an output problemand is brand new alternaor check says alternaor wire bad?
take new alternator back where u bought it and get another
Why would the battery be continuely draining even if it brand new on a 1993 Nissan 240 sx?
your alternator is either week in volts. Use a volt tester. or alternator is now working. replace it. I had same porblem with three batterys to test the alternator turn car on let run on idle and disconnect the positive car should still be running if it shuts off first check all wires on alternator if still connected then alternator is bad TIME TO REPLACE IT.
What is wrong with a 1986 Trans Am that makes a light tick or knock in the engine when rpms get higher?
Your alternator maybe bad
Why isn't your Mazda truck alternator not charging your battery?
bad alternator, bad voltage regulator, bad battery, bad connections.
What makes the alternator light come on in a 1990 Honda Accord DX?
Usually a bad alternator or regulator. Many auto parts retailers will test the charging system without charging you.
Why wont your brand new alternator recharge your battery?
Maybe the battery is defective. Check the voltage at the battery terminals with the engine running at idle. You should get 13.5 to 16 volts. If not the alternator is defective or the voltage regulator is bad. If you are getting the correct voltage, the battery is bad or the connections are corroded.
