• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Over charging
#1
Guys I have a 72 Mach 1 with a 351 automatic and I cannot seem to figure out my over charging issues the alternator was replaced due to no charge after that still wasn’t charging full fielded the alt and was working replaced the regulator and no charge laid over new wires for regulator now charging but at 15 volts tried different regulators and no change any ideas would be great
  Reply
#2
To begin with, please go to the introduction section of the forum and introduce yourself and your car. Be forewarned, we like pictures.

I agree, 15 volts is generally too high. Have you let it run a few minutes to see if it comes down? If so, are you sure your voltmeter is accurate? I've seen them that are further off than 1/2 volt.

Are you sure you re-wired your regulator connector correctly? There are two different schematics, one with gauges and one with idiot light. Here's a set of wiring diagrams
https://www.7173mustangs.com/thread-alte...#pid320622

Are the alternator connections correct?



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
#3
Check that your battery ground cable connects a ground 1) at the voltage regulator /apron and 2) at the block. Clean, bare-metal grounds with good cable. Adding another ground at the rear of the engine to the rear firewall won't hurt at all.

It may not be the source of your overcharging, but if not grounded properly it can be.
  Reply
Share Thread:  


Possibly Related Threads...
Thread Author Replies Views Last Post
  Maintenance Charging mudbilly 3 692 01-03-2016, 04:02 PM
Last Post: jeremycfr
  tachometer bounces when battery is charging fonzogt25 5 1,107 09-27-2015, 06:39 PM
Last Post: fonzogt25
  cigarette lighter not charging electronics in 1971 Mach 1 sadlerb_98 15 2,789 04-28-2014, 05:40 AM
Last Post: 73StangCoupe
  Charging system issue 73vertproject 18 1,716 06-06-2013, 11:10 AM
Last Post: Mister 4x4
  Proper ground for 73 engine, charging system? Not sure if I have this right. Monterey 10 1,663 11-26-2012, 07:01 PM
Last Post: Monterey



Users browsing this thread: 1 Guest(s)