The alternator is not getting power? At any of the wires or just the main/largest one? If you are testing the large wire, this is the output side that runs to the battery. If there is no power in this wire where it connects to the alternator it must have a bad connection at the alternator or at the battery or a break somewhere in between. If there is power there, I would look at the fuses.
if u know that you have a known good battery, and a known good alternator then check for a bad alternator wire. a replacement pigtail can be ordered from most auto parts stores for around $2 - $10 it splices in to the original wire, and it is usually the plug end that gets cooked (burned out) over time.
The battery may be NG. Take the vehicle to your local auto parts store and they can test the charging system for you.
Remove the wiring harness from the back of your 1994 Chevy alternator. Remove the alternator belt. Remove the alternator retaining bolts. Reverse the process to install your new alternator.
First start the car then pull off the positive on the battery if the car dies than you need a new alternator if the car keeps running u may need a new battery. A word of caution, testing an alternator that way can cause damage to the alternator. The alternator needs power to make power unlike the old generators from the past.
It's located on the end if the main power wire coming off the alternator. This wire connects to the starter. The fusible link is located on the starter end of the wire.
I use the public library. They have an entire section of automotive reference books including professional manual with wiring diagrams that are much better than those found in do-it-yourself manuals.
you could have a bad alternator or faulty plugwires ,or even a dirty fuel filter check for breaks in wires.
what year? And what power of alternator is it? Adamski (adam.francis@snowsgroup.co.uk)
Alternator is not charging the battery. When you turn on the lights the system doesn't have enough power to keep the engine running.
You probably have a bad alternator or a battery that is really bad, have the charging system checked out.
The alternator might not be charging the battery
no the charging system consists of the battery and the alternator. the battery being the starting point of the system. the battery provides the initial power. the alternator then keeps your battery charged while the motor is running. the starter gets its power from the battery but has no relation to the charging system. the starter has but only one function and that is to power up upon initial start up and turn your motor over to get it running. hope that helps you out a little bit.
That's not 12 amps,that's 12 volts,which means the system isn't charging Measure the voltage across the battery terminals,if its charging properly,it will be between 13.8 and 14.7 volts,anything less and its not charging. Suspect then a faulty alternator or wiring problem. and have the battery properly recharged and tested too,a low battery will not give you a correct charging reading and a faulty alternator can take its toll on a battery.
If you have no power to anything, and your battery isn't dead, then you more likely have a bad ground. If the battery is dead/keeps dying, there's a good likelihood that the alternator isn't charging it adequately.
i think you are having problem with your alternator its not charging your battery
that is the drive assembly which the power provided by the rotation of the crankshaft and through the engine drive belt causes the rotaion of the alternator which produces the electrical power to the auto and battery charging system
No. The short summary is that there usually is a fuse or circuit breaker in the line coming out of the alternator that protects the alternator from a sudden surge in power from some outside source and which also protects the engine's electrical parts from a sudden surge that might somehow come from the alternator (very doubtful this would happen). But that fuse doesn't keep the alternator charging in the strict sense of the phrase. What stops an alternator from charging is internal parts failure such as the burn out of a rectifier, bearing failure or the belt which drives the alternator failing or coming loose and slipping excessively. Short of failures such as these an alternator will keep on charging as long as the belt is turning its pulley and causing the rotor inside the alternator to turn.
Your alternator might be bad and not charging your battery properly.
Either the battery is weak and not charging properly, the connections are dirty on the terminals of the battery or the alternator is not putting out enough power. If you rev up the van does it go out or is it on while you are driving?
Not really. It should only move a little bit. If the alternator is not producing full power at idle, you may have a bad alternator.