Q:

What happens when an alternator belt is loose?

A:

Quick Answer

A loose alternator belt will affect the alternator's performance and will lead to automotive electrical failures, such as dead or weak batteries, dimmed headlights and engine stalling. Common signs of loose alternator belts include a loud squealing sound, improper voltage and flickering gauge lights, according to Pep Boys.

Know More

Full Answer

Since alternators are powered by automotive engines via fan belts connected to crankshafts, a loose belt can cause the alternator to undersupply the car's power requirements and drain the battery until the charge runs out. Loose alternator belts also cause automotive components to work harder in order to compensate for voltage fluctuations. Eventually, the slack leads to belt fraying and premature wear out.

Learn more about Car Parts & Maintenance

Related Questions

  • Q:

    How can you tell if you need a new fuel pump?

    A:

    The telltale signs of a bad fuel pump include sluggish acceleration, a high-pitched sound when the engine is first started, engine misfires, engine stalling and an engine that will not start at all. An automotive fuel pump is a mechanical or electrical device, and its main function is to supply a steady stream of pressurized fuel into the engine.

    Full Answer >
  • Q:

    What are the symptoms of an MAF sensor going bad?

    A:

    Some symptoms of a vehicle's mass air flow sensor going bad are difficulty starting the engine, engine stalling and hesitation during acceleration. These problems are similar to those caused by a faulty fuel pump.

    Full Answer >
  • Q:

    How can you tell if your car's alternator is going bad?

    A:

    There are two simple tests you can perform to determine if your car's alternator is going bad: a headlight test and a battery test. Once you have narrowed down the issue with these tests, you can perform electrical tests on the alternator itself to determine for sure whether it is malfunctioning. Telling whether a car's alternator is going bad is a little tricky. Specifically, it is difficult to distinguish between problems with the alternator and problems with the battery; these problems manifest with similar symptoms, since a broken alternator always leads to a dead battery.

    Full Answer >
  • Q:

    How do you check an alternator?

    A:

    To check an alternator, link the leads from a voltmeter to the terminals on the battery, and check the reading. Any reading between 13.8 and 15.3 volts means the alternator is working correctly.

    Full Answer >

Explore