Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > Expedition & Navigator
Sign in using an external account
Register Forgot Password?


Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator SPONSORED BY:

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-14-2005, 05:40 PM
PEPpfts PEPpfts is offline
New User
 
Join Date: May 2003
Posts: 13
PEPpfts is starting off with a positive reputation.
Unhappy 1998 Expedition 5.4L Code P0304 COP #4 cylinder misfire

Hi All !!
Yesterday as I was driving, the Check Engine light came on and started flashing on my 1998 5.4L Expedition.
The engine seemed to have a misfire under load.
Then the check engine light stayed on continiously.
I used a code scanner and came up with code P0304 which is the No. 4 cylinder misfire code.
I looked through the forums and this seems to be a common problem on these engines.
Can anyone advise me with some step by step instructions, on how to remove the #4 COP and replace it, as it seems quite difficult to get too.
Thanks !!
Lou
Reply With Quote
  #2  
Old 03-15-2005, 12:09 PM
TEEZLE TEEZLE is offline
New User
 
Join Date: Jan 2005
Posts: 14
TEEZLE is starting off with a positive reputation.
man I wish you luck!!!

I had to change the cylinder 3 coil pack and that was a pain in the @ss itself. Let me know if you find a link on how to change it.
Reply With Quote
  #3  
Old 03-15-2005, 12:53 PM
sperrotta sperrotta is offline
New User
 
Join Date: Apr 2004
Posts: 1
sperrotta is starting off with a positive reputation.
Similiar Problem

Had similiar problem, I checked the spark plug was cracked... replaced it and reset engine light works fine now

good luck
Reply With Quote
  #4  
Old 03-15-2005, 09:11 PM
bigCraig bigCraig is offline
Junior User
 
Join Date: Mar 2005
Location: In a house
Posts: 55
bigCraig is starting off with a positive reputation.
You guys are kidding right? A pain in the Ask? I weigh 400 and changed my 5.4 expy plugs in less then 3 hours.
Reply With Quote
  #5  
Old 03-16-2005, 06:18 PM
blhfla blhfla is offline
Senior User
 
Join Date: Mar 2005
Location: Tampa
Posts: 216
blhfla is starting off with a positive reputation.
I had to replace #3 and did all spark plugs and rubber boots as well because my mechanic said he had to pull the intake manifold and fuel lines. He's a friend and works CHEAP for me so I know he wasn't ripping me off; it's quite difficult to reach the rear cylinders behind the firewall. My 5.4 STILL misfires even after a new fuel filter (when he pulled the fuel lines he said the fuel was very dirty). Does anyone know the cause of these misfires?
Reply With Quote
  #6  
Old 03-20-2005, 05:51 PM
TEEZLE TEEZLE is offline
New User
 
Join Date: Jan 2005
Posts: 14
TEEZLE is starting off with a positive reputation.
Quote:
Originally Posted by bigCraig
You guys are kidding right? A pain in the Ask? I weigh 400 and changed my 5.4 expy plugs in less then 3 hours.
TAKING THREE HOURS TO CHANGE SPARK PLUGS IS NOT A PAIN IN THE ***?!?!?!?!?!?!


LMFAOLMAOLMFAO
Reply With Quote
  #7  
Old 03-21-2005, 03:39 PM
ASTROSMAN ASTROSMAN is offline
New User
 
Join Date: Mar 2005
Posts: 2
ASTROSMAN is starting off with a positive reputation.
Pull The Fuel Rail And Remove Coil Pack A Buddy Did #4.and All Plugs In 1.5hrs
Reply With Quote
  #8  
Old 03-21-2005, 05:17 PM
kb-65 kb-65 is offline
Junior User
 
Join Date: Jan 2005
Location: macedon ny
Posts: 56
kb-65 is starting off with a positive reputation.
switch the cop from 4 to 1 clear the codes and see if the miss moves to 1 this will tell you what the problem is plug or coil.
Reply With Quote
  #9  
Old 04-11-2005, 05:18 PM
legenddrug legenddrug is offline
Freshman User
 
Join Date: Jan 2002
Location: raleigh nc
Posts: 29
legenddrug is starting off with a positive reputation.
code p0304 #4 misfire

back to the original post. I have the same problem! I even swapped #4 with number 1 and still had the problem. Changed the plug....still same problem but now I can't get an engine light or code to come out even with a serious misfire goin one almost all the time! Any ideas?

Thanks, Brad
Reply With Quote
  #10  
Old 04-12-2005, 01:52 PM
72CutlassS 72CutlassS is offline
New User
 
Join Date: Apr 2003
Location: Bedford Lawrence
Posts: 11
72CutlassS is starting off with a positive reputation.
Hey guys,
I just had this problem come up on my '02 Expy. again.
It had came up once before and I replaced the fuel filter and it along with the servce engine light went away for about a 2 weeks.

What's the likelyhood that the coil pack is the only problaem?

It's scheduled to go into the dealer tonight (no warranty left ) and if all I had to do was change a coil, I would cancel my appontment.

The error was for cylinder 6.

Get me an answer in a hurry please!
Reply With Quote
  #11  
Old 04-12-2005, 10:29 PM
legenddrug legenddrug is offline
Freshman User
 
Join Date: Jan 2002
Location: raleigh nc
Posts: 29
legenddrug is starting off with a positive reputation.
I ordered my coil today and will in tomorrow (4/13) I will let you know, though it may not be soon enough.

Brad
Reply With Quote
  #12  
Old 04-13-2005, 08:39 PM
legenddrug legenddrug is offline
Freshman User
 
Join Date: Jan 2002
Location: raleigh nc
Posts: 29
legenddrug is starting off with a positive reputation.
I installed the new #4 ignition coil today and that solved my problem. $58 and alot of skinned knuckles!
Reply With Quote
  #13  
Old 04-14-2005, 11:04 AM
KR1's Avatar
KR1 KR1 is offline
Senior User
 
Join Date: May 2003
Location: Northern Alabama
Posts: 128
KR1 is starting off with a positive reputation.
invest in some $10 mechanics gloves.... its worth in....

I skinned many knuckles changing my plugs, then got smart..

Later
__________________
99 EXPY EB (2WD) 4.6L, 148K (14mpg).
05 Yamaha FZ6, 600cc... (45mpg)...and its fast!

http://www.ford-trucks.com/forums/pi...pictureid=1746
Reply With Quote
  #14  
Old 04-14-2005, 09:09 PM
broken wire broken wire is offline
Senior User
 
Join Date: Sep 2003
Location: York, PA
Posts: 223
broken wire is starting off with a positive reputation.
There is other issues that brings up these codes and they not spark related, I have seen this twice in 2 years, just completed a job like this on a 1998 5.4, get ready to dig deep into the pockets, the valves are pulling the stems out of the back of the valve facing, leaving the valves overall longer and the camshaft rocker arms are bottoming out the hydraulic lifters keeping the valves open, hence codes p0301-p0310 engine missfire, run a compression test on that cylinder to see this for sure. you may also have a plugged injector on the back side in the injector filter.
Hope this helps, Broken wire
Reply With Quote
  #15  
Old 04-26-2005, 06:44 PM
Wthomaslee Wthomaslee is offline
New User
 
Join Date: Oct 2004
Location: Malvern AR
Posts: 16
Wthomaslee is starting off with a positive reputation.
I've been working on mine all week now. New plugs and coils. Fixed it for a few days the it started missing again. compression is good and can't seem to find a problem. Its got to be something easy but can't find it.
Reply With Quote
Old 04-26-2005, 06:44 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Misfire Issue philn Modular V8 (4.6L, 5.4L) 3 09-15-2009 09:45 PM
04 f150 heritage v6 misfire jsims11 1997 - 2003 F150 2 04-17-2009 10:29 PM
P0304 BeauHymel Expedition & Navigator 6 02-21-2008 09:31 AM
Bank 1 too lean / Misfire in cylinder #4 jj1807 Expedition & Navigator 5 02-06-2008 09:21 PM
C.O.P. wiring on 99 5.4L merczephyr Expedition & Navigator 0 03-29-2005 08:09 PM


Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > Expedition & Navigator

Tags
1997, 2001, 2005, 4, 46l, 54, compression, cylinder, expedition, f150, ford, misfire, p0304, problems, truck

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


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 12:28 AM.


Powered by vBulletin® Version 3.8.7 AC1
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. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup