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Oil Can Mechanic
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Oil Can Mechanic
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What exactly was the problem with the original (2 up/2down) voltage regulators??? Did they burn up? Short out? Other? thx..Billu38
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I never heard where there was anything wrong with it and was used on other GM cars. I would guess that they decided the one terminal was not necessary in 1939 and eleminated the extra wire in the harness. The three terminal worked OK in the 1938 and discontinuing the four terminal regulator eleminated one item in Delco's production.
The ignition terminal was eleminated.
Last edited by Chev Nut; 09/07/16 01:15 PM.
Gene Schneider
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Oil Can Mechanic
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Thanks Gene...I've been under the impression it had a design flaw...this clears that up! Billu38
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A design flaw in a Chevrolet...  ...I never heard of such a thing. The forth wire went to the ignition switch and cut the power to the regulator when the switch was in the off position so as not to drain the battery. This feature was "built-in" to the three wire regulator.
Gene Schneider
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Joined: May 2009
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Oil Can Mechanic
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Oil Can Mechanic
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Sorry...the Devil made me say that! thx...Bill
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Shade Tree Mechanic
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Shade Tree Mechanic
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I have several old regulators that I have acquired over the years. Is there any way to test them to see if they are good? Is there anyone who rebuilds them if they are bad?
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Have you tried AC Delco, Yesteryear Antique 941.743.7784 Eastern Time? sales@yesteryearautoparts.com Eastern Time
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Joined: Jan 2002
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ChatMaster - 25,000
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I would guess finding a place that rebuilds regulators would be very difficult.
To make matters worse the original 1938 regulator was only made for 2 years.
Gene Schneider
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