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Author
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Topic: 70 Mach 1, Battery overcharging? any ideas
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JohnnyBadBoy
Journeyman Posts: 11
From: Bloomsburg, PA
Registered: Jun 2001
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posted 10-15-2001 10:28 PM
   
The car has a 4v cleveland. After driving around for 20-30 minutes batery acid is leaking out the caps on the batery. Battery is a newer type. Any thoughts, alternator tested good and so did voltage reg.
Thanks for any help.
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Clark
Gearhead Posts: 592
From: Rowlett,Texas
Registered: Aug 99
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posted 10-16-2001 11:27 AM
Johnny,
I would put a voltmeter on the battery posts with the engine running and verify if you have a high voltage problem. If the Alternator and Voltage regulator check out there could be a wiring issue, start with the voltage check.------------------
69 351W Sportsroof Deluxe
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franklin
Gearhead Posts: 128
From: VA
Registered: Nov 2000
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posted 10-16-2001 01:39 PM
I would say 12.0-12.5 volts for the car being off.
12.5-14.0 volts normal depending on battery condition.
14.0 and higher suspicious, especially with no electrical drain and 10 min or more after starting.
The rest of you guys agree?
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JAAZZY
Gearhead Posts: 745
From: Bay Area, CA
Registered: Apr 2001
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posted 10-16-2001 03:47 PM
If nothing else has changed it's likely to be the voltage regulator. It pretty much controls the amount of current going back to the alternator by varying the voltage to the stator. A multimeter would be a nice thing to have though.
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JohnnyBadBoy
Journeyman Posts: 11
From: Bloomsburg, PA
Registered: Jun 2001
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posted 10-16-2001 10:29 PM
Thanks for the replies, does anyone know if all the volatge regulators for the 65-70 mustangs were basically the same or not. Maybe i have the wrong one. Also seems like all the guages read a little to high. Won't get to it till friday, so thanks again ,i'll keep you posted.
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JohnnyBadBoy
Journeyman Posts: 11
From: Bloomsburg, PA
Registered: Jun 2001
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posted 11-08-2001 01:55 AM
Tried three different voltage regulators, and finally went with a new alternator from Advance auto, the new alternator fixed the problem.
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