Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150
Sign in using an external account
Register Forgot Password?


1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 05-11-2004, 08:04 PM
WiFireWire WiFireWire is offline
New User
 
Join Date: May 2004
Posts: 4
WiFireWire is starting off with a positive reputation.
Post Spark Plug wiring diagram?

Hi everyone. I bought a used 98 f150 and love it to death, however recently a surge went through my ignition system. At first I took it to a dealer who found the problem-an ignition coil burned out. This was replaced for a hefty $350, and it still was firing oddly. The dealer suggested to replace the EC Computer for another $400. Being on a budget, I replaced it myself. It's firing a little better, but I think the surge effected some plugs and wires causing it to miss. I have all the plugs, tools, and wires but I need to get my hands on a firing order diagram, just in case the dealer might have crossed a wire. I want to check this possibility out before I start replacing plugs and wires, cause it looks like a royal pain. Can anyone help out??
Reply With Quote
  #2  
Old 05-11-2004, 08:09 PM
triton_2002's Avatar
triton_2002 triton_2002 is offline
Postmaster
 
Join Date: Aug 2003
Location: South Texas
Posts: 2,977
triton_2002 is starting off with a positive reputation.
I think that info is in the owners manual, if you have it.
__________________
2002 F-150 Supercab 5.4 Triton V8
Arizona Biege
Reply With Quote
  #3  
Old 05-11-2004, 09:17 PM
WiFireWire WiFireWire is offline
New User
 
Join Date: May 2004
Posts: 4
WiFireWire is starting off with a positive reputation.
Probably is, but I don't have a manual. And ordering one would take a few days, I was hoping someone had one in electronic form for me to look at.
Reply With Quote
  #4  
Old 05-11-2004, 09:20 PM
PaulC PaulC is offline
Posting Guru
 
Join Date: Sep 2002
Posts: 2,294
PaulC is starting off with a positive reputation.
I'm going to assume that were dealing with a 4.6 with two coils:

Firing order: 1-3-7-2-6-5-4-8

Cylinder location:

Cowl
4---8
3---7
2---6
1---5
radiator

Now, the arrangement of wires as they come out of the coils:

Passenger side

cowl

6-3
1-5

radiator

Driver's side

cowl

7-2
4-8

radiator

There you go.
__________________
1999 Expy XLT 4x4 4.6
October 7, 1998 - April 26, 2006
Served me well.
Reply With Quote
  #5  
Old 05-11-2004, 09:25 PM
WiFireWire WiFireWire is offline
New User
 
Join Date: May 2004
Posts: 4
WiFireWire is starting off with a positive reputation.
PaulC, You are the BEST!!! Thanks a million! I'll let you know how it goes.

Thanks Again!!
Reply With Quote
  #6  
Old 05-11-2004, 10:25 PM
WiFireWire WiFireWire is offline
New User
 
Join Date: May 2004
Posts: 4
WiFireWire is starting off with a positive reputation.
Alright, thanks to your diagram, I've determined that the coils for 5 and 3 are dead, The rest fire beautifully. funny thing is, this is the coil that was just replaced. Bad coil? I already replaced the ECC. So what controls the coils and tells them to fire besides the computer? any thoughts?
Reply With Quote
  #7  
Old 05-12-2004, 04:28 AM
BlueOvalFitter's Avatar
BlueOvalFitter BlueOvalFitter is offline
Posting Guru
 
Join Date: Aug 2002
Location: Cajun Country
Posts: 1,973
BlueOvalFitter is gaining momentum as a positive member of FTE.
Electronic Integrated (EI) Ignition module is incorporated into the PCM.The PCM uses a signal from the camshaft sensor to determine piston position.Ignition timing is determined by the PCM,which then signals the module (PCM) to fire the coil.
__________________
2007XL R/Cab,4.2 V6,auto,cruise control
The anticipation of death is worse then death itself!
Reply With Quote
  #8  
Old 05-28-2004, 02:58 PM
Dewey's 4x4 Dewey's 4x4 is offline
Freshman User
 
Join Date: Dec 2003
Location: Florida
Posts: 29
Dewey's 4x4 is starting off with a positive reputation.
Hey guys,I have an 1997 F-250 4x4..triton 5.4.check engine light just came on yesterday,truck seems to be running fine,had a code check done,it says my #2 cylinder is miss firing,,now,,lol where the heck are the plug and wires so i can see if any are loose??
__________________
I love my 1997 F-250 4x4 Lariat
Reply With Quote
  #9  
Old 05-28-2004, 10:55 PM
PaulC PaulC is offline
Posting Guru
 
Join Date: Sep 2002
Posts: 2,294
PaulC is starting off with a positive reputation.
All 5.4 engines and 2000+ 4.6 engines use a coil-on-plug system. Every spark plug has a small coil located on top of it. No spark plug wires in the old fashioned sense. Look throughout the spark plug replacement threads in the F150 and Expedition sections for illustrations of the plug location and other info that may be helpful to you.
__________________
1999 Expy XLT 4x4 4.6
October 7, 1998 - April 26, 2006
Served me well.
Reply With Quote
  #10  
Old 05-29-2004, 10:08 AM
Dewey's 4x4 Dewey's 4x4 is offline
Freshman User
 
Join Date: Dec 2003
Location: Florida
Posts: 29
Dewey's 4x4 is starting off with a positive reputation.
Hey PaulC,,thanks a million,i'll do that
__________________
I love my 1997 F-250 4x4 Lariat
Reply With Quote
  #11  
Old 06-05-2004, 09:16 AM
Dewey's 4x4 Dewey's 4x4 is offline
Freshman User
 
Join Date: Dec 2003
Location: Florida
Posts: 29
Dewey's 4x4 is starting off with a positive reputation.
Ok i'm back,,I just tried to change my plugs yesterday,,I did 7 in about 1 1/2 hrs.lol crazy,,ok now I cant for the life of me get to 1,,standing in front of truck looking at motor,it's the 3rd on right side,looks like I have to take of a vacum something,which looks likeits mounted on the fuel inj,,lines or some shiny set of tubes,,that are connected to the manifold in a few places,,now how the heck do I change it? shop wants $75. to do it,,ha ha ha ha
__________________
I love my 1997 F-250 4x4 Lariat
Reply With Quote
  #12  
Old 06-05-2004, 09:26 PM
Racerguy's Avatar
Racerguy Racerguy is offline
Super Moderator
 
Join Date: Aug 2002
Location: BC, Canada
Posts: 12,666
Racerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to beholdRacerguy is a splendid one to behold
Did you get it figured out yet?
The #7 plug is a wee bit of a pain
I get at the screw that holds down the COP with a 7mm universal socket and an extension but you can probably do it with a nut driver instead. If you dont have a 7mm a 9/32 will usually work.
Once the COP is off you just use whatever combination of universal joints and extensions that works for you.
Some people remove the fuel rails to replace their plugs but I never do. It does make it easier to get at them but I dont like having stray fuel around and worrying about whether the injector O-rings will be ok etc.
And I'm lazy
__________________
Dave - FTE moderator
Forum Guidelines
this space for rent
Reply With Quote
Old 06-05-2004, 09:26 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150

Tags
1997, 2003, 2004, 46, 54, diagram, f150, ford, plug, ranger, spark, triton, v8, windsor, wire, wiring

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 08:34 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup