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post #1 of (permalink) Old 10-13-1999, 01:57 PM
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dont try at home!

87 RC over-charging with ammeter pegging on the high side. Turn on all accesories to bring meter down. Get to the house and consult manuals. One sez bad cell in battery. Swap batteries, no help. The factory manual sez grounded or disconnected field in alternator. Start RC and disconnect positive terminal on battery, making sure cable does not contact anything. Get back in vehicle and increase rpm's. Ammeter goes up, all courtesy light bulbs explode, voltage regulator does its immatation of a bbq pit and I get lots of bouncing sparks in the floor board. Take life time alternator for exchange, replace voltage reg, courtesy lights (3), and 3 fuses. Hookup, buttonup, and restart RC. Ammeter resumes regular operation. Turn on headlights, RC dies and refuses to start. Replace Elec control module. All ok for now. Visual inspection showed no melted wiring.
VERY lucky.

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post #2 of (permalink) Old 10-13-1999, 08:46 PM
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Re: dont try at home!

ouch

post #3 of (permalink) Old 10-20-1999, 09:14 PM
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Re: dont try at home!

Same thing happened to me with my old B200 van. Voltage Reg. was the culprit. BUT, I found our years later that the firewall connector lead for the ammeter wire got so hot that it melted the connector housing around it. Eventually the connecton became intermittent and caused a symptom that made me think the reg. was gone again. You might want to check the connector.
George

Geo. - 87RC
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post #4 of (permalink) Old 10-28-1999, 01:14 PM
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Re: dont try at home!

Sounds like the voltage regulator or alternator field grounded out.
Disconnecting the battery cable allowed the alternator to output full voltage, likely way over 20 Volts. When the alternator is over-charging, the battery will try to keep the voltage down to around 16 volts or less.

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post #5 of (permalink) Old 10-28-1999, 05:18 PM
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Re: dont try at home!

It sounds like your regulator. When mine went out the wires that connect to the ampmeter cought FIRE and melted the guage and the dash then it fried my battery. Smell the battery see if stinks.

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