FYI FORD - MustangSteve's Ford Mustang Forum
The Internet's Most Knowledgeable Classic Mustang Information
IF YOU HAVE A QUESTION ABOUT CLASSIC FORD MUSTANGS, YOU HAVE COME TO THE RIGHT PLACE!
MustangSteve has over 30 years of Mustang experience, having owned 30 of them and restored several others. With the help of other Mustangers, this site is dedicated to helping anyone wanting to restore or modify their Mustang.... THERE ARE NO DUMB QUESTIONS!!!!!
Visit MustangSteve's web site to view some of my work and find details for:
FYIFORD Contributors' PICTURES - Power Brake Retrofit Kits for 65-66 Stangs - Classic Mustang FAQ's by MustangSteve - How to wire in a Duraspark Ignition - Mustang Ride Height Pictures and Descriptions - Steel Bushings to fit Granada Spindles to Mustang Tie Rods - Visit my EBAY store MustangSteve Performance - How to Install Granada Disc Brakes MustangSteve's Disc Brake Swap Page - FYIFORD Acronyms for guide to all the acronyms used on this page - FYIFORD Important information and upcoming events

You are not logged in. Would you like to login or register?

5/12/2024 8:12 AM  #1


Strange thing just happened on road trip

Hi everyone we just took the 65 on its first trip to Vegas every thing was great been driving all day across desert at 73 mph it’s 88 out and we get into town and had to stop suddenly due to an accident. Suddenly I’m watching my temp at 212 and my volts at at 12 I turned off everything and would see 12.3-13. if I increased over idle I could get 13.1. I took next exit so as to not get stuck. We never went below 12 volts. After about 10 minutes on side streets temp started to come down some and volts started going back up. Last night car showed no signs of ever having a problem. I am going to check under hood this morning. Really not sure what happened other than stopping quickly in the heat with everything running at full temp
Any ideas
Found all good belts tight, volts in batter at 12.4 and same at alt no loose connections didn’t loose Any water and oil still full
I know it had to be hot out there on the freeway not moving

Last edited by Cab4word67 (5/12/2024 10:19 AM)


Slammed Big Blue, ran over the varmints that messed with the Stang. Now all is good in the NW
 

5/13/2024 5:00 AM  #2


Re: Strange thing just happened on road trip

12 volts is not charging in my book, especially with a 3G alternator.

A bad or weak battery could possibly cause this.

I suggest having both tested.

Perhaps a sound system amplifier might cause this too.

 

5/22/2024 5:52 AM  #3


Re: Strange thing just happened on road trip

I'll offer that the increased underhood heat could be affecting the voltage regulator.  This condition would be hard to troubleshoot, If all connections are clean and tight, I'd suggest changing out the internal voltage regulator. 


65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
 

Board footera


REMEMBER!!! When posting a question about your Mustang or other Ford on this forum, BE SURE to tell us what it is, what year, engine, etc so we have enough information to go on.