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View Poll Results: Likely problem with charging system? | |||
Bad Voltage Regulator | 4 | 25.00% | |
Bad Alternator (brushes?) | 4 | 25.00% | |
Bad Voltage regulator ground | 1 | 6.25% | |
Bad connections to alternator/voltage regulator | 5 | 31.25% | |
Other | 2 | 12.50% | |
Voters: 16. You may not vote on this poll |
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#1
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Charging system problem.
Ok, Who want's to take a guess at what is wrong with my charging system?
Symptom: The charging system on my 1971 Charger is randomaly working. When I first start the engine the charging system is not charging. I drove about three miles and was about to go back home when the charging system just started working again? This did the same thing a few times at the race track Friday too. I did a quick check and the alternator belt is fine. The alternator pulley seems tight (not slipping.) When this happens there is no charging and the voltage drops to 10-11 volts. Don't worry about the exact voltage, the important part is the battery is in the circuit, no open connection from battery through the key/ignition. Check out the poll to vote for the most likely fault I forgot to add to the poll, bad bulkhead disconnect (from the alternator, wire R6-12BK / bulkhead #18.) I'll have to check it out tomorrow and see what the problem is. |
#2
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Definatly check that bulkhead connection. Everything goes through the ammeter on the older cars so that would be my guess as to the most likely spot for trouble.
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#3
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how old is the alternator? might be bad brush's.... happens alot. They get short and hang up until the vibrate back to connecting. Next time it happens try tapping the back of the alternator, if it comes back on then there ya go.
Hope that helps..... Chris |
#4
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Try unpluging the plug at the regulator and jumping the leads and see what happens. If it charges where it should be, then it could be the regulator, if not then the alternator. Try it.
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#5
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Double check the chassis ground and engine ground connections. Better yet, run a temp ground wire from the battery to the alternator case, and another from the battery to the voltage regulator case. You may have a bad ground to the engine block that gets a little better as you drive/vibrate things around a little!
Just a thought. Good Luck. |
#6
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Does the car have a factory Amp Meter?
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#7
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The battery is in the trunk, but I don't think that is the problem.
It has the factory amp meter. it is possable it could be the problem, but I think it may be the alternator brushes. I don't think I will have a chance to check it out for awhile. I am just getting a new job/position at work (same employeer, but different job.) I'm sort of getting dumped into this new job and I have to get up to speed with the other engineers. Oh, trouble shooting the problem won't be a problem. I am an electrical engineer. I just wanted to see what everyone else thinks the problem is? |
#8
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Mine did pretty much the same thing after racing it. I changed the 2 out and its fine now. I figure it was small pulley x RPM related.
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#9
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Mine did something similar too. Ended up that the wires to the Amp Meter heated up. They were still connected, but just looked a little discolored. I spliced in 3 or 4 inches on either side of the gauge and it works fine.
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