I think you have 2 issues going---Battery and Alternator
Battery may be dead--Take to Autozone or Advance Auto or other, they will maybe keep it to charge and LOAD TEST IT. Do this, it's important!
Who tested the alternator. How do you know for sure it's good?
It may have a "HOOK UP" issue gone wrong, even if it's working right (we will attempt to check that. AFTER YOU GET IT RE-TESTED at the parts store for FREE!).
3 Ways to test it. Require a little work on your end!
I would help you, FOR FREE, if you will swing it by here!
1) Jeep "off" voltage, at battery terminals is about 12Volts Normally---Crank up and running it will be 13.5 or better if the alternator is charging. (Both readings at battery posts)
2) Drive it to parts store for tests (Free). Probably hard to get it there!
3) Take it off your baby, take it to them for the test.I suggest this, before we start guessing at stuff, that may be the alternator being the whole problem.
What should be happening, even with a really weak battery. The alternator should be running the show well, even if the Battery ain't helping out.
There are only a few wires to look at for problems, if you tell me that the parts store Just re-tested the alternator and it DOES WORK on their machine. Please do this, before we look for other problems, that may not exist!
I've owned 7 CJs, all primary drivers. Got my 1st in 1981.'77 CJ 5 304. My present is a '77 CJ 5 258 and a 1946 Willys.
I hate driving other Vehicles----I love looking out over my Jeep Hoods, It's Just A "GIVEN" and it's Natural!
Any more problem history or repairs or events leading to this may help me. Spill your guts, even if something stupid happened. Consider this your Jeep Confessional.I will not think any lower of you!
This is my Hobby, I have been doing this for the last 2 years while my foot w/ complications mended. If you investigate the "5" and "7" Forums, I have been the Primary Responder, during that period.
I am here to help you thru all of this-I know CJ's really well, I built my last 2 from almost the ground up. Solo!
Do you know how to use a VOLTMETER?
Images (Click to enlarge)
Saturday, February 5th, 2011 AT 7:41 PM