SOURCE: Low voltage, the battery runs low when running the car
What is the voltage you are reading? Is it below 13.2 or so? Also have you checked the current with the engine off to see if something else is working that should not be on. I ran across this twice while working on a truck and car. A relay that was wore out keep trying to close and would drain the battery every couple of months. Sometimes you can hear them clicking or buzzing. Touching them sometimes they are warm or real hot. But that is not a sure sign it is bad. In my Trailblaze they get hot but are ok. Another thougth is the belt on your alt, correctly set to spin it at the right voltage. I have ran across this many times lately with serpatine belts.
SOURCE: Will not charge
you will get some funny answers from some of these "experts " The symptoms suggest to me with out much doubt that the regulator is not doing its job correctly ,consistently.Iwould take it to an AUTO ELECTRICIAN and get it tested in situ.... there is only 4 things it can be , wireing ---battery---alternator-----regulator and of those the reg. is the only one that chops and changes. it will cost little for a sparky to check the reg ,. AND I WOULD LIKE TO KNOW THE OUTCOME
SOURCE: battery tests good & alternator
batteries can be bad right from the factory-rare, but it does happen. It needs to be load tested after a charge to see if it recovers. Then, have a test done on the alternator (free at most commercial auto parts stores)-that should rule out problems with battery, alternator, and connections. the only other thing is the ECU, for some reason, limiting the alternator output, but that should show up when the alternator is tested.
SOURCE: Hello, I have a 1995
Use a jumper to connect the positive terminal of the battery to the terminal L input of the alternator. That will give 12V to the exciter circuit of the voltage regulator and turn on the alternator so that it can begin charging. If that makes a difference, there must be something wrong with the input to terminal L.
SOURCE: 94 buick 3.8 engine not charging Battery right
Its a fairly simple system. The alternator gets a signal from the circuit for the warning light and-or gauge to activate the voltage regulator inside the alternator. The large wire between the alternator and the battery or starter is fused for protection.
Could be a problem with that circuit back to the instrument cluster, or the circuit to the battery, or a ground connection. You could also have a second defective alternator.
229 views
Usually answered in minutes!
×