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The alternator may have a faulty rectifier or faulty voltage regulator

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16y ago

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On a 1988 Lincoln town car limo why does the lights flicker when engine is running?

It is possibley your alternator or battery


What are symptoms of an alternator going bad?

You may see the headlights and dash lights flicker at an idle. You may hear unusual noises coming from the alternator when the engine is running.


Will your alternator recharge your battery if you let it sit for a while?

If the engine is running and the alternator is good. If the engine is not running, no.


How do you get the alternator to turn over?

The alternator is run by a belt connected to the engine. When the engine is running the alternator is turning. The alternator is what produces the electrical current that charges the battery & powers everything electrical while the engine is running. the battery is mainly to start the engine.


When is the alternator in use?

Anytime the engine is running.


What are the effects of a loose ground cable in a Kia Sorento?

If the loose cable is the main one from the negative side of the battery, then everything will flicker simultaneously with the key on and the engine stopped. When the engine is running, the alternator will keep things energized. If you have a loose groung cable on one particular accessory, only that accessory will flicker or just remain off.


Why would the Dash and Head Lights flicker on a 2002 Saturn L-300?

Check the alternator output, you may have a failed voltage regulator or bad brushes in the alternator resulting in an oscillating voltage value. This assumes that the flicker is relalted to engine rpms.


Does an alternator charge a battery while the car is not running?

No , just when the engine is running


How do you know if an alternator is bad?

Check voltage with a voltmeter at the battery With engine running readings should be 13.8-14.2 With engine running hold a screw driver to the back of the alternator, if there is no magnetic field, the alternator is bad.


Can a car's alternator charge the battery while the car is not running?

No. The alternator has to be turning to produce the charging voltage. It only turns when the engine is running.


Why is your 1988 Chevrolet truck with a 305 engine running of the battery only and not the alternator?

If it is running on the battery only then that means the alternator is not charging the battery.


How do you tell if Alternator is bad?

Get engine running. While the engine is running disconect the POSITIVE termninal from the battery. If the engine dies, the Alterntor is bad.