Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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 08-31-2011, 04:02 PM
captain1997 captain1997 is offline
Senior User
 
Join Date: Aug 2011
Location: Michigan
Posts: 211
captain1997 is starting off with a positive reputation.
92 f150 5.0 idle problems

Hope someone has some advise, I have run out of ideas! I have a 92 f150 4x4 with a 5.0,and it idles really high it revs up quickly but it goes back down really slow and idles way to high. I have checked for vacuum leaks,intake manifold leaks,and removed and cleaned the IAC. I even replaced the IAC with a couple of other ones I have laying around. When engine is warmed up and I unplug the IAC the idle goes down,and once in a while it goes so low it stalls the motor but it starts right up. What could be the problem? I know these 302's very well but this one has me stumped. I want to thank you ahead of time for any help.
Reply With Quote
  #2  
Old 08-31-2011, 10:02 PM
tsarge78 tsarge78 is offline
Junior User
 
Join Date: Mar 2009
Posts: 59
tsarge78 is starting off with a positive reputation.
ya this is a pain I have the exact problem myself my IAC was pretty built up with carbon but after I cleaned it still no change. It almost seems to be higher now. going to start back at square one and check all vacuum lines and canisters and go from there. Ill keep you updated with what I find.

Sarge
Reply With Quote
  #3  
Old 09-01-2011, 09:38 AM
captain1997 captain1997 is offline
Senior User
 
Join Date: Aug 2011
Location: Michigan
Posts: 211
captain1997 is starting off with a positive reputation.
Thanks Sarge,
I am going to do the same start from square one and see if I possibly missed something. If I find something out I will share it with you. I really hope my IAC isnt bad. They are quite expensive over 100 buck at auto zone, but I may have to buy a new one just to try it out. Pulled the one off my 89 mustang which I know works(at least it does fine on the HO 5.0) and i get same result. Oh well I will keep looking
Reply With Quote
Old 09-01-2011, 09:38 AM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks

Tags
1987, 2011, 50, 92, air, control, eng, f150, high, idel, idle, idles, mustang, problem, problems, warm

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
What are the symptoms of a bad IAC? *2fords* 1987 - 1996 F150 & Larger F-Series Trucks 5 10-22-2012 05:14 PM
302 idle! FRUSTRATING! captain1997 1987 - 1996 F150 & Larger F-Series Trucks 4 09-24-2011 05:44 PM
need some help quisp-n-quake 1987 - 1996 F150 & Larger F-Series Trucks 11 09-25-2007 09:24 PM
Need help with High Idle problem (really long post) jcstratt 1997 - 2003 F150 3 01-31-2006 11:28 PM
Warm idle problem jswalker145 1987 - 1996 F150 & Larger F-Series Trucks 16 03-08-2004 10:48 PM



All times are GMT -5. The time now is 12:59 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