Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Mystery wire

Thread Tools
 
Search this Thread
 
Old Jan 20, 2018 | 05:41 AM
  #1  
Texasknowhow's Avatar
Texasknowhow
Thread Starter
|
Freshman User
Joined: Dec 2014
Posts: 38
Likes: 0
From: Northern Virginia
Mystery wire

Guys, baselining a 1997 F250 w the 7.3. Found a small wire with a 90 deg cap on it near the fuel filter. Can anyone identify what it’s for?

I’m uploading a quick video of it here:
https://www.dropbox.com/s/dxlmogb6lt...%20AM.mov?dl=0

Thanks in advance! Clay
 
Reply
Old Jan 20, 2018 | 07:48 AM
  #2  
helifixer's Avatar
helifixer
Hotshot
20 Year Member
Liked
Loved
Top Answer: 1
Joined: Dec 2005
Posts: 10,248
Likes: 7,668
From: Chino Valley, Arizona
Fuel filter restriction switch, (ford calls it a vacuum switch) yours has been removed, it is a leak point and quite expensive for what it is.
also your boot from the driver side valve cover to the turbo (orange boot) is a recalled boot and updated with a black one that doesn't tear as easy foding yout turbo.
 
Reply
Old Jan 20, 2018 | 07:53 AM
  #3  
helifixer's Avatar
helifixer
Hotshot
20 Year Member
Liked
Loved
Top Answer: 1
Joined: Dec 2005
Posts: 10,248
Likes: 7,668
From: Chino Valley, Arizona
that pic is one of my '97's it hasn't started leaking "yet" that is why the sensor is still there. when it starts leaking sensor will be removed and an 1/8" pipe plug installed. I heat shrink the end of the wire and tie it back to the harness when I do that.
 
Reply
Old Jan 21, 2018 | 01:12 AM
  #4  
Texasknowhow's Avatar
Texasknowhow
Thread Starter
|
Freshman User
Joined: Dec 2014
Posts: 38
Likes: 0
From: Northern Virginia
Thanks for that answer. Makes total sense now. So should I ask for the updated turbo hose at a Ford Dealership? Mine is torn under the hose clamp on the turbo end. As I detail this new (to us) truck I will probably have additional questions. Another loose wire was found wrapped around the trans x-member - it fit a plug up high on the Driver’s side of the transmission. I’m thinking either reverse light switch or Neutral Safety Switch...??? I hooked it back up, but won’t probably fire it up until sometime tomorrow to see if I have something new working or not haha.

Thanks again.
 
Reply
Old Jan 21, 2018 | 07:45 AM
  #5  
Shawn MacAnanny's Avatar
Shawn MacAnanny
Elder User
Joined: Dec 2005
Posts: 776
Likes: 3
From: Felton, Delaware
I had the same issue with my orange hose. I got the one Riff Raff makes. I had a terrible time getting it to fit on but its high quality.

Riffraff Diesel 94-97 Turbo Intake Boot - Ford 7.3L
 
Reply
Old Jan 21, 2018 | 11:09 PM
  #6  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Automatic or manual transmission? How many terminals on that second connector you found?
 
Reply
Old Jan 22, 2018 | 03:48 AM
  #7  
Texasknowhow's Avatar
Texasknowhow
Thread Starter
|
Freshman User
Joined: Dec 2014
Posts: 38
Likes: 0
From: Northern Virginia
It’s the manual 5 speed. Two conductors on the wire/connector.
 
Reply
Old Jan 22, 2018 | 05:44 AM
  #8  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
That's the reverse light switch. There's no neutral safety switch.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-1

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-2

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-3

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-4

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-5

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-6

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-7

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-8

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-9

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
Old Jan 22, 2018 | 08:40 AM
  #9  
Texasknowhow's Avatar
Texasknowhow
Thread Starter
|
Freshman User
Joined: Dec 2014
Posts: 38
Likes: 0
From: Northern Virginia
Okay cool. I’ll need that to get my inspection for sure!
 
Reply
Old Jan 22, 2018 | 09:15 AM
  #10  
farmert's Avatar
farmert
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2006
Posts: 5,100
Likes: 1,510
From: western SD
Originally Posted by Texasknowhow
Another loose wire was found wrapped around the trans x-member - it fit a plug up high on the Driver’s side of the transmission. I’m thinking either reverse light switch or Neutral Safety Switch...???
If it fits that plug, and one of the wires is purple and the other is black, they are for the reverse lights. Go with the Riff Raff turbo hose, the updated one from ford comes as a kit that includes the metal piece that the crankcase breather tube hooks into that you don't really need to replace, but the new turbo hose won't fit the old metal tube. Plus it is a lot cheaper than the Ford kit.
 
Reply
Old Jan 22, 2018 | 09:21 AM
  #11  
Texasknowhow's Avatar
Texasknowhow
Thread Starter
|
Freshman User
Joined: Dec 2014
Posts: 38
Likes: 0
From: Northern Virginia
Thanks Farmert, I believe that is the wire. Also I’ll look into the RiffRaff hose. Thanks man.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
superduty4x4
1999 - 2003 7.3L Power Stroke Diesel
15
Sep 6, 2021 10:50 PM
ericbskis
6.0L Power Stroke Diesel
1
Oct 7, 2014 11:45 AM
KH85
1999 - 2003 7.3L Power Stroke Diesel
6
Aug 5, 2011 04:37 PM
oldgameandfishdiesel
1999 - 2003 7.3L Power Stroke Diesel
4
Jan 12, 2009 05:23 PM
Ed in Maine
1999 - 2003 7.3L Power Stroke Diesel
7
Nov 26, 2007 01:33 PM




All times are GMT -5. The time now is 08:44 PM.

story-0
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-1
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-2
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-3
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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
story-9
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE