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:

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-17-2012, 11:44 PM
Longdistancetrucker's Avatar
Longdistancetrucker Longdistancetrucker is offline
Senior User
 
Join Date: Mar 2011
Location: Yorktown, NY
Posts: 206
Longdistancetrucker is gaining momentum as a positive member of FTE.
jrmullen93
Exclamation 1997-2005 5.4l 2valve engines and rough idles

Just Came across this in the February 2012 issue of Motor Magazine and thought that I should share this as this is a very common thread here on the FTE forum.

"Owners of some 1997-2005 Ford Trucks with the 5.4L two-valve engine may complain of an intermittent rough idle. One likely cause, says Ford, is noncommanded EGR flow. A stuck open EGR vlave is ultimately the culprit.

To make a definitive diagnosis, connect your scan tool, start the engine and allow it to reach normal operating temperature. Next, allow the idle to stabilize, scroll down to the DPFEGR PID on the scanner's display and write down the voltage. Now disconnect the vaccuum hose to the EGR valve and connect a vaccuum pump to its port. Pump the vacuum up until the EGR valve is wide open, then bleed off the vaccuum. Record the DPFEGR voltage again. Repeat this procedure several (about 8) more times.

If the DPFEGR voltage increases by .03 volt or more from the initial reading and the idle gets rough, the EGR valve is probably stuck open. Try tapping the casting with a wrench. If the voltage decreases and the idle now gets smooth, the valve is definitely sticking. Replace it with a revised design, Part No. XL3Z-9D475-CA.

Trucks that can benefit from the upgraded EGR vlave are 1997-99 F-250 light duty pickups, 1997-2004 f-150s, 1998-99 Lincoln Navigators, 1997-2005 E-series vans, 1998-2004 F-super duty pickups and 2000-05 Excursions."

-Tom Rosario (Feb. '12 Motor Magazine - "Service Slants")
__________________
-2002 F150 XL 4/6l V8 4X4
-John M.
Sorry for the constant posting I'm a college student in the middle of nowhere so I need someone intelligent to talk to....
Reply With Quote
Old 02-17-2012, 11:44 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
P0402 code bbsitum 1997 - 2003 F150 6 03-29-2012 08:02 PM
Anyone with an intermittent rough idle please read this first! Longdistancetrucker Super Duty & Heavy Duty 1 02-18-2012 11:22 AM
Rough Idle (Cold) 4.0 What next? Tom Norman 2.6, 2.8, 2.9, 4.0 & SOHC 4.0 V6 6 06-16-2004 11:51 PM
1997 4.0 L suddenly idles bad/misses areyou4real Aerostar 6 04-29-2004 02:47 AM
83 ranger 2.3, timing woes kings51 Ranger & B-Series 5 08-19-2002 11:29 PM


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

Tags
02, 03, 54, 54l, egr, f150, f250, idle, idles, rough, 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


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 10:01 PM.


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