Go Back   Ford Truck Enthusiasts Forums > Regional Chapters > Mid-West Region > Illinois Chapter
Sign in using an external account
Register Forgot Password?


Illinois Chapter Join Chapter Leader: KOESTNER

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 11-23-2004, 10:31 AM
tmcd tmcd is offline
New User
 
Join Date: Nov 2004
Posts: 3
tmcd is starting off with a positive reputation.
98 Ford Expedition - Rough Idle

I have a 98 ford expedition 5.4L w/107K miles. It began to idle roughly, with RPM's fluctuating and stalling at times. Check engine light is on with codes p0171 and p0174 (too lean). I have also had intermitten check engine light come on for p0153 (slow O2 sensor). I've read various info on the internet about Mass Air Flow sensors and IAC motor. Is there a definitive answer for these 171/174 codes?

Last edited by tmcd; 11-23-2004 at 10:36 AM.
Reply With Quote
  #2  
Old 11-23-2004, 04:34 PM
Fastronald's Avatar
Fastronald Fastronald is offline
Elder User
 
Join Date: Aug 2004
Location: Palos Heights
Posts: 790
Fastronald is starting off with a positive reputation.
Welcome

Welcome to the site and the Illinois Chapter. I'm sure you will find good advice and suggestions here on your problem. Fairmontman is our chapter tech coordinator, if he sees this he may have your answer. Where are you in Illinois?
Some of us may have a shop recommedation if needed. If you are in the Chicago western suburbs, I can send you to a good repair shop in Darien.

Fastronald - Illinois Chapter Leader
__________________
Welcome to AMERICA.....now learn to speak english!

To ALL my fellow Veterans, Thanks!

U.S. Army 1971 - 1974

Founding F.T.E. Illinois Chapter Leader - 2004 - 2005
Reply With Quote
  #3  
Old 11-23-2004, 05:39 PM
tmcd tmcd is offline
New User
 
Join Date: Nov 2004
Posts: 3
tmcd is starting off with a positive reputation.
I'm in south elgin.
Reply With Quote
  #4  
Old 11-23-2004, 08:39 PM
fairmontman fairmontman is offline
Junior User
 
Join Date: Sep 2004
Posts: 89
fairmontman is starting off with a positive reputation.
Iac motors are common problems,especially with higher milage.Sometimes they can be cleaned.You may want to try cleaning the throttle body also.Most parts stores have throttle body cleaner.It may also have a bad o2 sensor if it's throwing that code,but I would start with cleaning the iac and throttle body first.Also make sure the spark plugs and wires are ok. Bob
Reply With Quote
  #5  
Old 12-21-2004, 04:45 PM
tmcd tmcd is offline
New User
 
Join Date: Nov 2004
Posts: 3
tmcd is starting off with a positive reputation.
Smile 98 Expedition - Rough Idle Codes 0171 + 0174 Solved!

Thanks for your help on this site. A vacuum hose on the passenger side of the engine going back down between the engine and the firewall had a huge hole on the inside of the 90 degree angle going into the engine. The material at the bend in the hose was disintegrated. Replaced the hose and it runs better than it has in a long time.
Reply With Quote
Old 12-21-2004, 04:45 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Regional Chapters > Mid-West Region > Illinois Chapter

Tags
54l, 97, 98, 99, code, expedion, expedition, ford, idle, idling, o2, p0153, problems, rough, sensor

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 On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 05:21 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. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup