Testing Coil Pack 5.4l - Page 2 - Ford Truck Enthusiasts Forums

Testing Coil Pack 5.4l

Thread Tools Search this Thread
Old 12-02-2004, 02:35 PM
FHI-prez FHI-prez is offline
Freshman User
Join Date: May 2004
Posts: 43
FHI-prez is starting off with a positive reputation.
I also had a coil pack fail last year. It ran like crap, and couldn't find the problem, but I just kept running the begger until it threw a code. Finally, it threw #5 coil as being the culprit. Sometimes like stated above the computer won't throw a code until the misfire is sufficient enough to cause a trouble code to be shown.

You can also test the emission system by puttin a vacuum pump on the EGR valve and pumping the EGR valve open when the engine is running at idle. This should kill the engine. If it does not, then you have to pull the plenum and clean it out as deposits can get in there and clog it up. This is of course assuming that you know the EGR valve is operating correctly, as well as your DFPE sensor and vacuum control module for the EGR valve. All of which are easily bench tested to see if they are in good operating condition. Eventually this too would throw a "recirculating exhaust gas flow excessive detected", Code #P0402.

Reply With Quote
Old 12-02-2004, 07:51 PM
muscletruck7379's Avatar
muscletruck7379 muscletruck7379 is offline
Join Date: Apr 2003
Location: Harrisburg, NE
Posts: 2,698
muscletruck7379 has a good reputation on FTE.muscletruck7379 has a good reputation on FTE.muscletruck7379 has a good reputation on FTE.
my dads o2 e150 has a similar problem, it said that it was #3 so we swapped the pack and plug with #8 and it still says #3. so maybe a fuel injector?
Reply With Quote
Old 08-30-2010, 01:48 PM
Rg1Baja's Avatar
Rg1Baja Rg1Baja is offline
Freshman User
Join Date: Aug 2010
Location: Henderson, Nv
Posts: 29
Rg1Baja is starting off with a positive reputation.
Sweet Ive joined the club of people who have washed their 5.4L. But thanks for the info. Helped greatly.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
5.4l Keeps killing Coil Packs! Need help! PikeFire216 Modular V8 (4.6L, 5.4L) 44 12-22-2016 08:09 PM
coil pack questions greentruck72 1997 - 2003 F150 16 07-31-2016 07:43 PM
Coil Pack Moisture rrichmon Modular V8 (4.6L, 5.4L) 13 04-24-2013 11:39 AM
How can you tell if a COP is good/bad? 97 5.4 Blue Rebel 1997 - 2003 F150 9 04-21-2010 11:17 AM
Will bad coil pack throw code? Superdave 1999 to 2016 Super Duty 20 06-12-2009 12:13 PM

Go Back   Ford Truck Enthusiasts Forums >

54, 54l, bench, check, codes, coil, cop, ford, pack, packs, pending, plug, resistance, test, triton

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 02:34 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.