2002 mazda protege 5 alternator8/8/2023 ![]() Using the new alternator to charge a low volt battery can damage the alternator. Tips: Ensure the battery is fully charged before installation. Review the installation and test the alternator output using a multimeter.Slip the drive belt back in position by using the tensioner arm and reinstall all cable connections.Install the new alternator and tighten the mounting bolts with a ratchet.Compare the new alternator with the old alternator and check whether everything matches, including the mounting bolt holes.Remove the old alternator from the bracket.Once the belt is off, unfasten the mounting bolts connecting the alternator to the bracket.Remove the drive belt from the pulley by loosening the belt tensioner.Disconnect the cable connections from the back of the alternator.Here’s how a professional mechanic would replace a failed alternator: If any readings are out of range while the engine is running, your alternator could be problematic, and you may need a car repair. This can be accomplished by loosening the hinge bolt and set bolt on the side. Load engine: Start turning on accessories (like the headlights, radio, and windshield wipers.) The voltage shouldn’t drop under 12V or go above 14V. See answer (1) Best Answer Copy First you need to remove the AC belt to be able to install the alternator belt.With the engine running at around 1000 RPM, the multimeter voltage should stay within 12-14 volts. Alternator assessment: Turn on the engine.A good, fully charged battery should measure between 12.6 -13.2 volts. Battery assessment: With the engine turned off, connect the multimeter leads to the battery terminals - red to the positive terminal, black to the negative terminal.To load test your alternator, you need a voltmeter or multimeter. How Often Do I Need An Alternator Repair?Īn alternator can generally last for about 150,000 miles or 7-8 years before needing replacement. Yes, but only for a short while before the battery fails, then you’ll need an alternator repair. Here are answers to some common questions on alternator repairs: 1.
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