Having problems with your Dodge B Series Cargo ?

I recently has a fire in our 1976 360 2 barrel dodge establishment rv the wire harness melted. I replaced each individual wires, started it up, chek all the lights and gauges, lookedd good. We took it for a ride, everything was fine. The next time we went, I noticed the alternator gauge was charging all the way ove when I accelerated and back to just behind the middle mark when i idled, We got to our 45 mile destination, camped for 4 days, and when I went to start it, dead. battery dead. It too

Posted / edited by AnonymousUser on : 27-05-2019

Answers :

The gauge seems to be indicating no problem.
At idle, the alternator should not really be putting out much of anything, so you only get the battery output.
The alternator should only really put out when you rev it up.
So I see no indication of an alternator wiring problem.

First you need a test light or a volt meter. You can get a volt meter at a place like Harbor Freight for $3.

The first thing you do is check for a short.
You do that by first turning everything off, and then disconnecting one of the battery terminal.
Then put a test light to bridge the gap you just created.
If it lights bright, then there something on all the time, which is draining the battery over night. The alternator can be at fault depending on if a particular diode is bad. Disconnect things one at a time until it goes away and you have identified the short.

If not, then put the battery terminal back on and check the voltage. It should be 12.5 about. Then when you start it, it should drop to around 10 as you crank. Then return to 12.5 once started or giving up.
If it drops below 12.5 when ignition on and not cranking, then you have a short only when ignition is on.

Then you rev the engine, and if it goes above 14 volts, the alternator is fine.

If you find nothing wrong, then I would suspect the battery.
It simply may not hold a charge well any more.
Heat can cause plates to warp and short internally.
Repair Help & Product Troubleshooting for Dodge B Series Cargo

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0098 seconds