Why isnt my 1990 chrysler new yorker fifth avenue altenator not charging battery
Could be a bad battery or a bad alternator, or both.
A bad battery can hinder the performance of an alternator and a faulty alternator can slowly kill a battery.
Check your battery fluid levels and acidity concentration. Do not replenish fluid level with plain tap water as it will finally spell doom on the battery.
If you can still drive the car, take it to your nearest auto parts dealer. They usually have basic maintenance checkups for free. One of them is testing the charging system and they will tell you right up if the problem lies in the battery or the charging system.
A bad battery is a blind alley. If it's bad then replace it.
If you still want to hack at it at home, and all is OK with the battery, there is an old way of telling whether the alternator is working properly. But it's kind of dangerous if you do it wrong.
With the engine running, place the flat part of a flat head screwdriver on the side of the alternator, opposite to the v-belt or serpentine pulley. I'm talking about the center of the back cover of the alternator. Make sure you do not touch any electrical connections with the screwdriver as you may cause a short-circuit and experience fireworks. The tip of the screwdriver should be safely away from any spinning pulleys and belts.
If you feel a magnetic 'pull' on the screwdriver from the alternator body at the center of the back cover, it is a good sign that it is actually doing its job, charging that is. But only that.
An alternator "alternates" between powering all things electrical in your car and charging the battery. There is a small, replaceable thing called a "voltage regulator" that when it goes bad, it kinda gives you battery problems. You can buy one and replace it yourself or you can have someone do the dirty stuff.
In any case, a good, professional, clean, and thorough checkup is always the best option.
Hope it helps.
Jun 11, 2014 |
1990 Chrysler New Yorker