Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)
Sign in using an external account
Register Forgot Password?


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 04-17-2013, 11:17 PM
WorkhorseF250's Avatar
WorkhorseF250 WorkhorseF250 is offline
Senior User
 
Join Date: Jun 2009
Posts: 128
WorkhorseF250 is starting off with a positive reputation.
2006 5.4l idling issue

Ok so when the truck is under load or just drive, it idles as normal, but when you idle up and the truck idles back down it drops low enough that the truck starts knocking and idling rough, the only way to get the truck to run normal is to idle it back up and eased down to normal idle. Or by shutting the truck off. The oil pressure gauge drops off on occasion when this rough idling happens.

I was thinking the oil pump is on its way out, with it supplying the VCTs with not enough oil they may not be able to operate under such quick throttle changes

Any ideas would be greatly appreciated!

Thanks
__________________
2006 F-250 Super cab 4x4 5.4L 3V V8

Hold my beer and watch this
Reply With Quote
  #2  
Old 04-21-2013, 08:09 PM
LxMan1's Avatar
LxMan1 LxMan1 is offline
Moderator
 
Join Date: Dec 2001
Location: Louisville,Ky.
Posts: 22,246
LxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant futureLxMan1 has a brilliant future
I would start with cleaning the throttlebody first. If it has build-up in it, the blade can hang sometimes and have trouble keeping a good idle. If it sticks a bit and the rpm drops too low, then yes the oil pressure can drop enough to cause issues with the cam phasers.
__________________
Jimmy- FTE Moderator

88 5.0 LX Mustang
63 F100 351W/C6

Reply With Quote
Old 04-21-2013, 08:09 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V8 (4.6L, 5.4L)

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
Rough idle, FICM, ICP, VOLTS or other??? LiftedBlackHD 6.0L Power Stroke Diesel 13 05-15-2014 06:00 AM
Truck doesnt want to hold an idle (videos, SG II readings) acf6 6.0L Power Stroke Diesel 15 06-27-2013 04:44 PM
rough idle/low oil pressure? XTfx4 1973 - 1979 F-100 & Larger F-Series Trucks 2 06-14-2013 06:48 PM
Rough Idle and hard start? jgavac Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 5 02-03-2013 07:35 PM
idle problem spider42 Performance & General Engine Building 1 01-24-2003 12:54 PM



All times are GMT -5. The time now is 03:42 AM.


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