electrical question
Thread Starter
|
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
electrical question
I have a 1987 F250 6.9 Diesel. When I start to work in the morning, 5:15am The volt meter acts crazy. It will go to the charge side but still in the white and stay there for awhile. Then it will drop back to the discharge side but not all the way do total discharge. It will do this repeatedly all the way to work which is 20 miles. Charge then discharge, back and forth all the way to work. There are no idiot lights at all during this time. On my way home in the afternoon everything works fine. Also in the morning the only electrical stuff running is the lights. The lights don't dim when the volt meter drops and everything seems ok except the volt meter acts up. Any ideas?
Thread Starter
|
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
The battery doesn't run down. At night is when I notice the voltage meter going crazy. I watched in this afternoon,3 pm and the meter didn't jump around like it had this morning at 6am. Could the lights be shorting out somewhere?
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
Check the main light switch connector for burned up and the light switch for damage to the prongs.
Trending Topics
Posting Guru
Joined: Apr 2008
Posts: 1,614
Likes: 0
i forgot to mention that, good thing you thought of that, i had a head light switch problem actually i had it twice, the first time i had the problem i couldnt get the tail lights and head lights to come on together, found a used switch and that fixed it for about 5 months, then it started going out again and i would just be going down the road and the lights would go out.
it sucked my step dad almost recked and i almost didi one time.
it sucked my step dad almost recked and i almost didi one time.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
This mod will eliminate the headlight switch problem forever.
It uses relays to take the headlight amperage load off the headlight switch and wiring.
https://www.ford-trucks.com/article/...ay_System.html
It uses relays to take the headlight amperage load off the headlight switch and wiring.
https://www.ford-trucks.com/article/...ay_System.html
Thread Starter
|
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
Thankx guys I'll check the light switch asap. Today I changed the fuel selector valve and it will be nice to know I have a full rear tank but couldn't get to it without syphening it out.
Thread Starter
|
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
Just an update on the electrical problem. I R&R the regulator since I had bought one when I first got the truck. I don't remember why but it wasn't being used so I figured I'd try that first. I changed it and didn't drive it till the next day when it almost pegged the volt meter when I went to go to work. I limped back home so I wouldn't damage anything. I put the old regulator back on to get to work. On my way to work everything worked like it was supposed to. No more problems. I think the connections might have been bad. I know I had a 1977 gasser that would give me all kinds of problems until I unplugged the regulator a number of times and then everything worked fine. Corrosion problems I would guess in both cases. Either way, everything is working fine now.
Posting Guru
Joined: May 2003
Posts: 1,242
Likes: 3
From: Joliet, Illinois
A donor??
As in parts from a truck that might be just as old and could be no better shape than the one being fixed?
Wiring gets old, and if you are pulling and reinstalling old wiring, you just do more damage!
There are companies that reproduce wiring for older trucks, that is assuming the factory no longer offers it as NOS, aka New Old Stock.
As in parts from a truck that might be just as old and could be no better shape than the one being fixed?
Wiring gets old, and if you are pulling and reinstalling old wiring, you just do more damage!
There are companies that reproduce wiring for older trucks, that is assuming the factory no longer offers it as NOS, aka New Old Stock.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
I have found something as simple as removing a connector and the reinstalling it can fix some problems like he was having.
To many connectors have different metals from one side to the other and cause corrosion just from being plugged in.
To many connectors have different metals from one side to the other and cause corrosion just from being plugged in.