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  70 Mach 1, Battery overcharging? any ideas

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Author Topic:   70 Mach 1, Battery overcharging? any ideas
JohnnyBadBoy
Journeyman

Posts: 11
From: Bloomsburg, PA
Registered: Jun 2001

posted 10-15-2001 10:28 PM     Click Here to See the Profile for JohnnyBadBoy   Click Here to Email JohnnyBadBoy     Edit/Delete Message   Reply w/Quote
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

posted 10-16-2001 11:27 AM     Click Here to See the Profile for Clark   Click Here to Email Clark     Edit/Delete Message   Reply w/Quote
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

posted 10-16-2001 01:39 PM     Click Here to See the Profile for franklin     Edit/Delete Message   Reply w/Quote
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

posted 10-16-2001 03:47 PM     Click Here to See the Profile for JAAZZY     Edit/Delete Message   Reply w/Quote
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

posted 10-16-2001 10:29 PM     Click Here to See the Profile for JohnnyBadBoy   Click Here to Email JohnnyBadBoy     Edit/Delete Message   Reply w/Quote
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

posted 11-08-2001 01:55 AM     Click Here to See the Profile for JohnnyBadBoy   Click Here to Email JohnnyBadBoy     Edit/Delete Message   Reply w/Quote
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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