The alternator is a relatively simple component containing only a few parts but it plays a critical role in the operation of any gasoline powered vehicle. This will tell you the diodes are good or shorted in the alternator.
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What happens if you short an alternator. A short can draw up to triple the source current so shorting most stock alternators would pull over 200a easy unless you have a 60a or something. You should have continuity in one direction and if you switch leads youll have no continuity. While these are all signs that your alternator is going bad to know for sure youll need to have it tested. 6 symptoms of a failing alternator 1. Keep the meter on the battery and then reconnect the cable from the alternator. Six alternator warning signs.
Disconnect the big main cable to the alternator and see if the short goes away. Weak or dead battery. I imagine it didnt blow because it couldnt react fast enough to a short and would only blow under a permanent fault. If you notice any. Most modern cars have a dashboard warning light that alerts you when the alternator is on the fritz. The alternator is part of the electrical system of your vehicle.
Without enough power sometimes the device will not function or will suddenly stop working like the radio turning itself off. Dont ignore this indicator. Its key role is to provide power to. Other items that could be affected include power locks windshield wipers and heated seats. Headlights are dim or flickering. If it does then use your meter to measure the ohms between the alternator post and the alternator case.
Having to jump start the vehicle on a regular basis one of the first symptoms of a bad or failing alternator is the. Even though it may. If the engine suddenly cuts while driving it could be an alternator issue. Theres slow blow and fast blow fuses auto fuses are usually fast blow but a big 200a might be slow blow. If the voltage drops and keeps dropping over a period of minutes you have a bad alternator. Dim lights another symptom of a potential problem with the alternator is dim or flickering lights.
Electrical vehicle equipment like power seats or windows may be slow to operate. Most likely its one of many possible alternator problems and without some attention the alternator can cause car trouble ranging from slow starts all the way up to a dead car. Your power windows could operate more slowly. If you have continuity in both directions then the large post is grounded or the internal diodes are bad. Flickering or dim headlights are a strong signal that your alternator may not be. Electric failures could present themselves in a variety of ways.
Battery light comes on. This is often the first indicator that the alternator is going bad.
Gallery of What Happens If You Short An Alternator
