Notices
2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 engine
Sponsored by:
Sponsored by:

Where does this wire go????

Thread Tools
 
Search this Thread
 
Old Jul 20, 2014 | 04:30 PM
  #1  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
Where does this wire go????

My son and I changed the spark plugs in my 2004 F-150 Lariat with the
5.4 Triton V8,v3 engine. Thankfully, we got all 8 plugs out without breakage.

We do have a problem. There is an extra wire that we do not know where
it goes. This red wire come out of the coil/plug harness near the fire wall.
The end of the wire had a trumpet appearance and was about the size of
a dime. In the center was a round object about 3 millimeter in size. Over
all this terminal was very clean. The truck seem to be running fine.

Could anyone tell me where this attaches.

Thanks
 
Reply
Old Jul 21, 2014 | 01:56 AM
  #2  
ojai150's Avatar
ojai150
More Turbo
15 Year Member
Joined: Jan 2008
Posts: 538
Likes: 24
From: Ojai California
Originally Posted by mchemical
My son and I changed the spark plugs in my 2004 F-150 Lariat with the
5.4 Triton V8,v3 engine. Thankfully, we got all 8 plugs out without breakage.

We do have a problem. There is an extra wire that we do not know where
it goes. This red wire come out of the coil/plug harness near the fire wall.
The end of the wire had a trumpet appearance and was about the size of
a dime. In the center was a round object about 3 millimeter in size. Over
all this terminal was very clean. The truck seem to be running fine.

Could anyone tell me where this attaches.

Thanks
Are you sure its a wire , and not a small hard vacuum hose ?
 
Reply
Old Jul 21, 2014 | 03:42 AM
  #3  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
Wire.....vaucum hose?

No, it is not a vacuum hose.
Thanks for asking.
 
Reply
Old Jul 21, 2014 | 05:08 AM
  #4  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
where does it go

Originally Posted by mchemical
No, it is not a vacuum hose.
Thanks for asking.
Well, I really do not know for sure. It just does not appear to be a vacuum line.
 
Reply
Old Jul 21, 2014 | 06:04 AM
  #5  
David7.3's Avatar
David7.3
Postmaster
Joined: Jun 2014
Posts: 3,206
Likes: 3
From: Oakhust NJ Jersey Shore
What side of the motor is this on, Is it just s single wire? I have a connector that hooks to the OPS under the intake, and some tritons have there knock senors mounted under there and more info and I will look under my hood again and see.
 
Reply
Old Jul 21, 2014 | 06:14 AM
  #6  
David7.3's Avatar
David7.3
Postmaster
Joined: Jun 2014
Posts: 3,206
Likes: 3
From: Oakhust NJ Jersey Shore
I checked my 04 again, the only thing I see on the passenger side is the red vacuum line that goes from the intake to the purge valve (MOUNTED ON FIREWALL) to the vacuum can.
 
Reply
Old Jul 21, 2014 | 07:54 AM
  #7  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
Red Wire

Thanks Dave7.3 I will look and see if I can find it as you suggest.
 
Reply
Old Jul 21, 2014 | 12:05 PM
  #8  
ojai150's Avatar
ojai150
More Turbo
15 Year Member
Joined: Jan 2008
Posts: 538
Likes: 24
From: Ojai California
Originally Posted by David7.3
I checked my 04 again, the only thing I see on the passenger side is the red vacuum line that goes from the intake to the purge valve (MOUNTED ON FIREWALL) to the vacuum can.
I would bet it is the 2nd part of the vacuum line that goes from the back of the intake on the passenger side to the fuel pressure valve
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-1

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-2

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

 Verdad Gallardo
story-3

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

 Joe Kucinski
story-4

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

 Brett Foote
story-5

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-6

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

 Brett Foote
story-7

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

 Michael S. Palmer
story-8

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

 Verdad Gallardo
story-9

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
Old Jul 22, 2014 | 10:21 AM
  #9  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
Now to find the loacation on the firewall

Originally Posted by David7.3
I checked my 04 again, the only thing I see on the passenger side is the red vacuum line that goes from the intake to the purge valve (MOUNTED ON FIREWALL) to the vacuum can.
You are exactly correct Dave7.3. The trumpet looking part is part of the
purge control valve. ( I saw the part in parts catalog)The redline is a vacuum line.

Now to find this purge valve. Could you give me a little more instructions
on it exact location. Then I will have the job done.

Thanks Dave7.3
 
Reply
Old Jul 22, 2014 | 10:53 AM
  #10  
70f100longbed's Avatar
70f100longbed
Fleet Mechanic
20 Year Member
Liked
Joined: Aug 2002
Posts: 1,899
Likes: 29
From: Raleigh USA
That red vacuum line goes to the 4wd hub solenoid and is not plugged into anything on 2wd trucks. The purge valve is on the driver's side next to the brake booster
 
Reply
Old Jul 22, 2014 | 11:05 AM
  #11  
mchemical's Avatar
mchemical
Thread Starter
|
New User
Joined: Dec 2009
Posts: 11
Likes: 0
That red vacuum line

Thank you for your reply.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kaysystems
Large Truck
8
Jun 18, 2017 06:01 PM
82_F100_300Six
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
7
Jul 1, 2008 06:28 PM
E150
Electrical Systems/Wiring
2
Nov 16, 2005 04:30 PM
Greywolf
Garage & Workshop
15
Oct 8, 2004 10:36 AM
kf4zra
Aerostar
2
Jun 15, 2004 06:04 PM




All times are GMT -5. The time now is 04:05 PM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic 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 | 2026-06-03 11:38:36


VIEW MORE
story-3
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-4
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-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-6
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-7
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-8
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-9
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