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 11-17-2008, 09:37 PM
epiciocc epiciocc is offline
New User
 
Join Date: Nov 2008
Posts: 2
epiciocc is starting off with a positive reputation.
Coil Pack test procedure for 01 5.4L F-150

I am looking for a test procedure for the coil pack on a 5.4L '01.
Having hesitation/bucking around 1500 RPM in O.D. I have seen the problem noted, with varying degrees of success. This seems to the most suggested starting point to look.

Thanks,
Ed
Reply With Quote
  #2  
Old 11-17-2008, 09:47 PM
LxMan1's Avatar
LxMan1 LxMan1 is offline
Moderator
 
Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,247
LxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant future
Welcome to the forum. Have you scanned for a misfire code to know which cylinder may be failing?
__________________
Jimmy- FTE Moderator

88 5.0 LX Mustang
63 F100 351W/C6

Reply With Quote
  #3  
Old 11-18-2008, 12:51 AM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
An assistant is required. Have your assistant start the engine and put the truck in gear while holding brake depressed. You then disconnect the connector for the coil packs one at a time and then reconnect them and move on to the next COP. When the connector is removed you should notice a change in engine RPM and see the engine shake somewhat. The ones where you notice a change are good. If you don't notice any change it indicates the COP is bad on that cylinder. You might not get any P03XX DTCs and still have some bad COPs. I had #1 COP bad, but had no misfire DTCs.
Reply With Quote
  #4  
Old 11-18-2008, 09:49 AM
epiciocc epiciocc is offline
New User
 
Join Date: Nov 2008
Posts: 2
epiciocc is starting off with a positive reputation.
Thanks guys, I'm going to start my troubleshooting.
Reply With Quote
  #5  
Old 11-18-2008, 12:38 PM
PerfDistIgnition PerfDistIgnition is offline
FTE Sponsor
 
Join Date: Aug 2006
Posts: 751
PerfDistIgnition is starting off with a positive reputation.
Quote:
Originally Posted by epiciocc View Post
Thanks guys, I'm going to start my troubleshooting.

Our new Ford COPís, the Sultans of Spark(S.O.S.), have
been designed with both durability and performance in mind.
Please see them at:

http://www.performancedistributors.com/soscoils.htm

Quality was the main feature we stressed when we went to the
drawing board on these coils.

See your FTE special at:

http://www.ford-trucks.com/forums/793806-cop-fte-special.html#post6780133
__________________
FTE Sponsor
Performance Distributors
www.PerformanceDistributors.com
Reply With Quote
  #6  
Old 11-18-2008, 10:02 PM
LxMan1's Avatar
LxMan1 LxMan1 is offline
Moderator
 
Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,247
LxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant future
If they are as good as your other parts, then I'm sure they are great COP's !!
__________________
Jimmy- FTE Moderator

88 5.0 LX Mustang
63 F100 351W/C6

Reply With Quote
  #7  
Old 11-19-2008, 04:13 PM
PerfDistIgnition PerfDistIgnition is offline
FTE Sponsor
 
Join Date: Aug 2006
Posts: 751
PerfDistIgnition is starting off with a positive reputation.
Quote:
Originally Posted by LxMan1 View Post
If they are as good as your other parts, then I'm sure they are great COP's !!
Thanks!

Hope all is well with you and your truck.
__________________
FTE Sponsor
Performance Distributors
www.PerformanceDistributors.com
Reply With Quote
  #8  
Old 11-19-2008, 11:56 PM
Bluegrass 7 Bluegrass 7 is offline
Postmaster
 
Join Date: Sep 2006
Posts: 4,956
Bluegrass 7 has a good reputation on FTE.Bluegrass 7 has a good reputation on FTE.
Missing at low rpm in OD under light loads is usually a dead give away for a bad COP.
No code, no light.
It is a lean miss under the specific conditions.
The offending COP has shorted turns and cannot be found by a simple resistance test.
A dealer 'stress test' for output is the only way short of some luck.
Replacing all 8 also has a remote chance of still getting one bad new coil to confuse you. Saw it happen many times and been here in the past and learned.
The reason why this condition happens is a story in it'self if you really need to know.
Good luck. You now have the lead. Just find which one.
Reply With Quote
  #9  
Old 11-20-2008, 06:28 AM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
The fact that Ford can't detect it's own misfires shows their OBDII software has room for improvement. Having to do a stress test or load the engine down and remove the COP connectors means DTCs are NOT being set even though misfires are occurring. You wouldn't have to do those steps if misfire DTSs were being set. Setting misfire DTCs are supposed to help the technician get the car out the door faster. Without them you either have to do extra work or you start barking up the wrong tree as I recently did. I had misfires WITHOUT misfire DTCs. The DTCs I had were Lean Codes so I started troubleshooting them. When I couldn't find the source of the lean codes I went back to basics and worked directly on the misfires. That's when I found the bad COP on #1. Ford overdrives their COPs which contributes to their high failure rate. If you compare Ford to other brands you'll find they don't have the high failure rate of Ford because the other brands ramp up their coils more slowly rather than hitting them with full current as Ford does. These Ford COPs are going to continue to fail, but if I have misfires on a Ford in the future without misfire DTCs I'm going to look for a bad COP rather than something that could cause a different DTC.
Reply With Quote
  #10  
Old 11-20-2008, 09:25 AM
KingRanchMan02's Avatar
KingRanchMan02 KingRanchMan02 is offline
Posting Guru
 
Join Date: Oct 2005
Location: Louisville, Kentucky
Posts: 2,199
KingRanchMan02 is gaining momentum as a positive member of FTE.KingRanchMan02 is gaining momentum as a positive member of FTE.
The conditions that Bluegrass refers to will not set a misfire code because there is no hard failure of a coil. A misfire has to be repetative enough in a given number of engine revolutions for the misfire code to be set.
__________________
John, aka KingRanchMan02
`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter.
FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
Reply With Quote
  #11  
Old 11-20-2008, 12:23 PM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
Let me give one anecdotal example of misfires that I believe should have set a misfire DTC, but did not. 99 F150 with rough idle and very poor acceleration. The misfire was bad enough that the truck couldn't get out of its' own way yet no misfire DTCs were set. How bad does it have to get for the P03XX DTCs to go set. I have a truck(not Ford) with a big(aftermarket) camshaft in it and on cold mornings I get a misfire DTC because of the lopey idle even though the truck is idling good and accelerates smoothly. I can guarantee with a truck running as bad as this F150 was running the customer is going to bring the truck in for service even though the SES lite is not illuminated.
Reply With Quote
  #12  
Old 11-20-2008, 01:16 PM
KingRanchMan02's Avatar
KingRanchMan02 KingRanchMan02 is offline
Posting Guru
 
Join Date: Oct 2005
Location: Louisville, Kentucky
Posts: 2,199
KingRanchMan02 is gaining momentum as a positive member of FTE.KingRanchMan02 is gaining momentum as a positive member of FTE.
I tend to agree with you on that but the ECM doesn't look at the COP directly. It senses misfires by monitoring the CKP and CMP sensor outputs.
__________________
John, aka KingRanchMan02
`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter.
FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
Reply With Quote
  #13  
Old 11-20-2008, 02:23 PM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
I realize OBDII strategy monitors the CKP and CMP and has no way of knowing if the misfire is due to a bad COP or the spark plug or even in the case where there are spark plug wires a wire that is disconnected. I'm saying that Ford strategy does set misfire DTC or at least I don't see them when there are misfires and bad ones at that. If GM can dectect a lopey cam on a cold morning why can't Ford detect a real misfire on a stock engine that has a bad COP?
Reply With Quote
  #14  
Old 11-20-2008, 03:22 PM
KingRanchMan02's Avatar
KingRanchMan02 KingRanchMan02 is offline
Posting Guru
 
Join Date: Oct 2005
Location: Louisville, Kentucky
Posts: 2,199
KingRanchMan02 is gaining momentum as a positive member of FTE.KingRanchMan02 is gaining momentum as a positive member of FTE.
I suppose the simple answer to that is the COP hasn't suffered a hard failure in the sense of open or completely shorted out. I assume that either of these cases would surely set a misfire code. The COP is actually failing in as soft failure mode with one or two turns of the coil shorted out, letting it continue to work except under high engine loads when it's output falls off and the intermittent misfire occurs. that is why a stress test is used to illustrate the weak COP.
__________________
John, aka KingRanchMan02
`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter.
FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
Reply With Quote
  #15  
Old 11-20-2008, 04:43 PM
eallanboggs eallanboggs is offline
Elder User
 
Join Date: Jan 2008
Posts: 605
eallanboggs is starting off with a positive reputation.
The F150 I'm talking about had misfires at IDLE(very low load) and during full throttle acceleration(WOT-heavy load). Under this theory I can see the misfires not being detected at idle, but when accelerating from a dead stop which is heavy load the misfires should have been detected. The ECM anticipates the pulses coming from the CKP and CMP using engine speed, load and other factors. When those pulses don't arrive within a certain "window" either your on a very bumpy road(washboard) or you're having misfires. I'm beginning to believe the "window" for Ford is just barely open if at all.
Reply With Quote
Old 11-20-2008, 04:43 PM
 
 
 
Reply

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

Tags
02, 150, 1997, 54, 54l, codes, coil, f150, ford, pack, packs, procedure, replacement, test, tools, v8

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coil Pack Moisture rrichmon Modular V8 (4.6L, 5.4L) 13 04-24-2013 10:39 AM
01 f350 missfiring 5.4l gas Jeepjones85 Super Duty & Heavy Duty 23 08-02-2012 09:58 PM
5.4l Keeps killing Coil Packs! Need help! PikeFire216 Modular V8 (4.6L, 5.4L) 21 02-02-2012 10:10 PM
Testing Coil Pack 5.4l smmuttyy Modular V8 (4.6L, 5.4L) 17 08-30-2010 12:48 PM
Napa Coil Packs - Any good? warmdye Modular V8 (4.6L, 5.4L) 3 11-30-2004 02:23 PM



All times are GMT -5. The time now is 03:36 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. Fordģ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup