Re: Amp Gauge Pegs During Acceleration???
[Re: kz5rt2]
#1261892
07/05/12 01:04 AM
07/05/12 01:04 AM
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Joined: Oct 2007
Posts: 3,903 Oregon
hooziewhatsit
master
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master
Joined: Oct 2007
Posts: 3,903
Oregon
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If it's going full output that means the Field wire is being grounded somewhere.
Disconnect both wires to the Alt and see if it still happens. Then add the blue wire and check. Then add the Green wire (and make sure the Green wire isn't shorted to ground).
If you ever find yourself in a fair fight, your tactics suck.
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Re: Amp Gauge Pegs During Acceleration???
[Re: hooziewhatsit]
#1261893
07/05/12 02:51 AM
07/05/12 02:51 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Quote:
If it's going full output that means the Field wire is being grounded somewhere.
Disconnect both wires to the Alt and see if it still happens. Then add the blue wire and check. Then add the Green wire (and make sure the Green wire isn't shorted to ground).
That is right as it is overcharging. You did not say what year it is because if its old enough it could have the one wire field with a mechanical reg. Ron
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Re: Amp Gauge Pegs During Acceleration???
[Re: 383man]
#1261894
07/05/12 10:15 AM
07/05/12 10:15 AM
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Joined: Jan 2003
Posts: 10,752 North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,752
North Dakota
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Check your wiring harness from the alternator to the bulkhead connector carefully. I had one case where an intake manifold bolt had rubbed through the tape then through the insulation on the battery lead in the harness. The bolt intermittantly grounded the lead and caused the type of problem you are describing. Now with you measuring 17.5 volts when it happens I doubt if this is the exact case. It would help to know if it is an isolated field alternator (two field wire) or grounded field alternator (one field wire) as it seems something in the field circuit is the culprit.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Amp Gauge Pegs During Acceleration???
[Re: kz5rt2]
#1261902
07/05/12 02:56 PM
07/05/12 02:56 PM
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Joined: Jan 2003
Posts: 5,445 So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,445
So Cal
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The Mopar OE bulkhead terminals and housing was designed to handle only up to about 50 Amps @ best.. If running a bigger alternator than it is suggested to changeover the Amp guage to a Voltmeter, and run heavier direct wires rather than the 0.25" tab connectors. Also is the alternator a 1 wire system? Or are you still using the Mopar OE voltage regulator? If running the Mopar OE voltage regulator, be careful as the voltage/current for the field circuit increases significantly and can cause additional electrical/reliability issues. Just my $0.02..
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Re: Amp Gauge Pegs During Acceleration???
[Re: Sixpak]
#1261904
07/05/12 07:49 PM
07/05/12 07:49 PM
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Joined: Feb 2004
Posts: 1,012 indiana
mcmopars
super stock
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super stock
Joined: Feb 2004
Posts: 1,012
indiana
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Quote:
Bypass the connections for the heavy red and heavy black that go into the stock firewall connector. Drill a new hole, put a rubber grommet on it, and make new connections. Clip them where they go into the plug in connector, both on the engine side and under the dash. Heavy black off alternator feeds juice to dash and back thru heavy red to recharge battery. Heavy red feeds juice from battery to dash and everything else when engine isn't running. This is a long known problem spot for many years. Even the factory knew this in the 60's - the fleet vehicles they sold had this done at the factory, for things like taxis. The rest of the connectors can be removed from their plug, wire brushed, greased up and put back into their harness plug. I do this on all old Mopars I work on. The grease really helps prevent corrosion.
good advise.follow
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