When do you need to replace an alternator?
If you haven’t changed the serpentine belt, which runs the alternator, in more than 50,000 miles, replace it with a new one. A faulty, loose belt can cause a perfectly fine alternator to not work correctly. Voltage meters are fairly inexpensive (usually between $10 and $20) and can be purchased at most auto supply stores.
Can a manual tensioner be used to replace an alternator?
The belt tensioner will only travel (swing) so far which can make installing the belt difficult. Never pry or force the belt onto the pulley. Vehicles with a manual tensioner or the belt tightens with the alternator, there should about ½ inch of deflection in the belt between the pulleys with the greatest distance between them. 7
Do you need to remove serpentine belt to change alternator?
As you loosen the bolts, the alternator will slide in the bracket under the tension of the belt. You may not need to remove the serpentine or accessory belt if it’s not damaged.
How can you tell if your alternator is bad?
Also, make sure the connections are tight. Examine the alternator for any signs of wear. For example, if you hear a rattling from the alternator or if it vibrates excessively while the vehicle is running, chances are it needs repair.
When to replace the alternator on a 1990 Toyota?
When replacing the alternator on a 1990 Toyota, check the amperage rating on the placard on the alternator. The alternator is available in different amperages, depending on the electrical accessories on your particular car model. When an alternator begins to fail, the diode trio is usually the first to go.
How do you change the alternator on a car?
Changing the alternator on most cars is generally the same. Find the alternator (has to be connected to the serpentine belt), and then look up steps to replace it. The main difference in cars is where the alternator is and how it’s mounted.
When did Delco alternators start replacing DC generators?
This is just a quick visual identification guide for Delco type alternators. First Alternator used on GM Vehicles to replace old DC Generators. External regulator mounted on the firewall. First used in 1963 on the Corvette. First internally regulated alternator used by GM. Replaced the externally regulated 10DN. Again, first used on the Corvette.
How to identify your GM alternator USA built high output?
This is just a quick visual identification guide for Delco type alternators. First Alternator used on GM Vehicles to replace old DC Generators. External regulator mounted on the firewall.