Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

melted fuse panel...do others having same??

Thread Tools
 
Search this Thread
 
Old Feb 5, 2010 | 11:48 PM
  #1  
steekers's Avatar
steekers
Thread Starter
|
Freshman User
Joined: Jan 2010
Posts: 39
Likes: 0
melted fuse panel...do others having same??

I needed to replace my fuse panel on my 89 Super Duty 7.3 IDI and notice that all the replacements I locate in the junk yards (none are available at the dealer) have a melted area at the back of fuse position 9. This is a 30 Amp fuse that is for the heater/AC so it must be heating up more that it should for it to melt.

I am curious if others out there can tell me if their fuse panels look the same? It won't be obvious by looking at the fuse side so you will need to unscrew the 2 screws and pull it out to see the back side. For those of you who use their heaters a lot I would like to hear from you especially. I just wonder if this is a weak electrical part of the wiring. What fix is there?

Thanks everyone.
 
Reply
Old Feb 6, 2010 | 01:40 AM
  #2  
Rick Wallace's Avatar
Rick Wallace
Posting Guru
Joined: Dec 2009
Posts: 1,272
Likes: 0
Dont know about my fuse panel,but I melted 2 switches.I had a A/C guy tell me to get a switch from ford instead of the aftermarket because the aftermarket switches would not handle the power correctly,I did and had no more problems.Our long hot summers the A/C runs all the time
 
Reply
Old Feb 6, 2010 | 11:02 PM
  #3  
steekers's Avatar
steekers
Thread Starter
|
Freshman User
Joined: Jan 2010
Posts: 39
Likes: 0
which switch?

Rick-Which switch did you replace? Are you able/willing to look at the back side of the fuse panel where the wires insert and see if you have any melted areas?

I suppose that the A/C unit would also cause the melted fuse 9 as well, but it seems the heater unit draws more current.

In looking at my wiring diagrams and the fuse panel, I also see a 12 GA grey/yellow wire (circuit 687) that is for ACC Feed. This provides voltage to the A/C Heater circuit.

It would be great if others could look at the back of their plastic fuse panels and give me feedback. I realize it is a "chore" to do and is not likely at the top of anyones list of "need to dos" but just thought I would ask.

If I cannot isolate the electrical problem, I may need to keep the A/C Heater units disconnected and tough it out! For those of you who live in the very cold or very hot climates, the disconnect is not an option.
 
Reply
Old Feb 6, 2010 | 11:16 PM
  #4  
macman85602's Avatar
macman85602
Tuned
Joined: Nov 2002
Posts: 348
Likes: 0
From: Benson, AZ
there may be a way to use one of the spare fuse spots and wire in a relay. It would be the same principal as the headlight mod. It would also take the load off the fuse box.
 
Reply
Old Feb 7, 2010 | 08:00 AM
  #5  
Rick Wallace's Avatar
Rick Wallace
Posting Guru
Joined: Dec 2009
Posts: 1,272
Likes: 0
The switch that controls the fan
 
Reply
Old Feb 7, 2010 | 09:18 AM
  #6  
WarOzz's Avatar
WarOzz
Posting Guru
Joined: Dec 2009
Posts: 2,322
Likes: 2
From: Dairy, OR
I had my fuse block out last week, no burned spots that I can remember. My heater is being used daily so if it was going to overload it would have done it by now.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
268Fords
1999 - 2003 7.3L Power Stroke Diesel
7
May 29, 2016 03:24 PM
TheBlueMule
6.0L Power Stroke Diesel
4
Feb 22, 2016 02:48 PM
sns2832
1997 - 2006 Expedition & Navigator
2
Feb 23, 2014 11:04 AM
RoyalFord
1997 - 2003 F150
3
Jan 15, 2012 11:38 AM




All times are GMT -5. The time now is 10:49 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE