5.4L coil pack (coil over plug) - Ford Truck Enthusiasts Forums



5.4L coil pack (coil over plug)

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 12-28-2011, 09:29 AM
DaGuru373 DaGuru373 is offline
New User
Thread Starter
 
Join Date: Sep 2010
Location: Brunswick, Ohio
Posts: 5
DaGuru373 is starting off with a positive reputation.
Question 5.4L coil pack (coil over plug)

Hello club FTE. members.............
Im currently replacing my plugs boots springs and Ect.
What I want to know is if there is a specific resistance (Ohms) rating or a range that a good or acceptable coil should be at ?
I have checked 4 of the 8 at room temp. and all read 7 Ohms but does ANYBODY know specificly the acceptable number ?
Thank you..................Jc.
Thats checking from pin to pin on the connector btw...
Reply With Quote
  #2  
Old 12-28-2011, 11:57 AM
JWA's Avatar
JWA JWA is offline
Post Fiend
 
Join Date: Aug 2010
Location: Reynoldsburg, Ohio
Posts: 10,209
JWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputationJWA has a superb reputation
Typically and in my experience with a known bad COP checking DC resistance isn't a reliable indication of anything. I've had known bad COP's check out just fine with a DVM.

The best way to test is either in operation---you'll notice a misfire or using sophisticated electronic diagnostic tools. While the vehicle is running carefully disconnect each COP from the wire harness to see if a noticeable change happens---if not the COP is good.

HTH
Reply With Quote
  #3  
Old 12-28-2011, 03:51 PM
Franklin2's Avatar
Franklin2 Franklin2 is offline
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 37,976
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
The newer engine computers that drive these cop systems are usually smart enough to detect a cylinder miss-fire, and will tell you which cylinder it is. It's true, a regular volt-ohmmeter doesn't have a high enough voltage to fully test the insulation integrity of the coils.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
~~2000 7.3 won't start Autoenginuity PCM error Ohms to Injectors Checked~~ deshet1980 1999 - 2003 7.3L Power Stroke Diesel 3 12-23-2016 11:49 AM
Injector harness resistance check tnwill 1999 - 2003 7.3L Power Stroke Diesel 4 07-27-2016 09:12 AM
2001 taurus help DLeach4512 3.7, 3.5 and 3.0 Duratec V6 1 05-24-2016 09:46 PM
5.4L coil pack DaGuru373 1997-2006 Expedition & Navigator 3 12-28-2011 10:21 PM
Engine Hesitates or Stumbles During Acceleration PersiusOne 1997 - 2003 F150 4 11-24-2008 08:19 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
2008, 250, 54, advice, coil, cop, f150, f250, ford, forum, pack, packs, plug, 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 05:33 AM.