Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2004 - 2008 F150
Sign in using an external account
Register Forgot Password?


2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
SPONSORED BY:
Click HereAdvertisement

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-17-2011, 03:53 PM
tallryan82 tallryan82 is offline
New User
 
Join Date: Sep 2011
Posts: 5
tallryan82 is starting off with a positive reputation.
05 5.4L Intermitent Rough Idle When Warm

I have a 05 fx4 5.4L with 85k on it. It has started ideling rough when i come to a stop light or slow down to 10 mph or less. It only does it once in a while. There doesn't seem to be any real pattern. The motor shakes until you rev it up and then it goes away.

I have cleaned the maf, put in new air filter and fuel filter. And put in a new battery.

Has anyone else had this problem? Would a coil act like that? Maybe plugs? Or a vacume leak? Any input would be great! Thanks
Reply With Quote
  #2  
Old 09-18-2011, 12:17 AM
ShootinOK's Avatar
ShootinOK ShootinOK is offline
Senior User
 
Join Date: Nov 2005
Location: Claremore OK
Posts: 117
ShootinOK is gaining momentum as a positive member of FTE.
could be any of those - have you replaced the plugs yet?

My truck started to have an annoying little miss like that after I changed the plugs.
I had a small hairline crack in one of the new plugs. Wasn't throwing codes but I could feel it. I finally had a dealer diagnose it for me and they found the #8 cylinder was the problem. It eluded them for a while too.
They pulled the plug and looked it over real good finding just a tiny little hairline crack.
1 more new plug and it runs like the day I got it (with 12 miles on it.) Today it has 100003
Reply With Quote
  #3  
Old 09-18-2011, 12:24 AM
tallryan82 tallryan82 is offline
New User
 
Join Date: Sep 2011
Posts: 5
tallryan82 is starting off with a positive reputation.
did you do your own plugs? did you have any issues. i can do plugs but kinda worried about the breakage.
Reply With Quote
  #4  
Old 09-18-2011, 12:29 AM
ShootinOK's Avatar
ShootinOK ShootinOK is offline
Senior User
 
Join Date: Nov 2005
Location: Claremore OK
Posts: 117
ShootinOK is gaining momentum as a positive member of FTE.
Yes and Yes
I broke two - buy the tool (or borrow one) and follow the TSB it's a bear but it was better for me than spending $600 for the dealer to do it.
Reply With Quote
  #5  
Old 09-18-2011, 11:57 AM
aquaman aquaman is offline
Elder User
 
Join Date: Jul 2005
Location: San Jose, CA
Posts: 970
aquaman is gaining momentum as a positive member of FTE.
Mine was idling like crap. It just got slowly worse over time. My radio antenna was jiggling a good 1/2" at stoplights if that's a good indicator. I finally swapped out my plugs at 68K and it's smooth like silk now. They were visibly worn and the gap was about 2x that of new ones. No way they would have lasted until the factory spec of 100K if you asked me!!
__________________
'05 F150 5.4L FX4 SCrew
'10 F350 6.4L Lariat FX4 CC SRW LWB
Reply With Quote
  #6  
Old 09-18-2011, 12:00 PM
tallryan82 tallryan82 is offline
New User
 
Join Date: Sep 2011
Posts: 5
tallryan82 is starting off with a positive reputation.
yeah its a pretty ****ty design but i think every motor out there has its issues. it wont deter me from buying a ford again, im just gonna do more research up front so when i buy my next one i know what to expect and what preventative measures to take. Im shocked though that this plug issue is so bad. how did they not see that coming.
Reply With Quote
  #7  
Old 09-18-2011, 12:14 PM
aquaman aquaman is offline
Elder User
 
Join Date: Jul 2005
Location: San Jose, CA
Posts: 970
aquaman is gaining momentum as a positive member of FTE.
It's a good truck. No regrets for me. Wife liked it so much she wanted it, so I bought myself a 6.4 diesel

Every car I've had has had their own quirks. It's somewhat expected, so don't let that deter y'all

Since driving the 6.4, I'm a diesel convert... No more gassers or sparkplugs for me!
__________________
'05 F150 5.4L FX4 SCrew
'10 F350 6.4L Lariat FX4 CC SRW LWB
Reply With Quote
  #8  
Old 09-18-2011, 09:32 PM
tallryan82 tallryan82 is offline
New User
 
Join Date: Sep 2011
Posts: 5
tallryan82 is starting off with a positive reputation.
does anyone know where the best place is to get that spark plug removal tool. can you get it at a auto parts store or is it a special thing
Reply With Quote
  #9  
Old 09-18-2011, 10:16 PM
ShootinOK's Avatar
ShootinOK ShootinOK is offline
Senior User
 
Join Date: Nov 2005
Location: Claremore OK
Posts: 117
ShootinOK is gaining momentum as a positive member of FTE.
Napa, or buy online
Summit has them - a quick search even turned up Amazon Amazon.com: Lisle (LIS65600) Broken Spark Plug Remover for Ford Triton 3 Valve Engines: Automotive and thats about 1/2 what I paid.
Reply With Quote
  #10  
Old 09-18-2011, 10:40 PM
dleger75 dleger75 is offline
New User
 
Join Date: Sep 2011
Posts: 3
dleger75 is starting off with a positive reputation.
I have replaced my plugs and the idle did not get any better. I have cleaned the MAF still rough idle. It hasn't threw any codes. It seems that is getting worse. Any more suggestions?
Reply With Quote
  #11  
Old 09-18-2011, 10:45 PM
tallryan82 tallryan82 is offline
New User
 
Join Date: Sep 2011
Posts: 5
tallryan82 is starting off with a positive reputation.
does yours only do it when its been running a while ?
Reply With Quote
  #12  
Old 09-18-2011, 10:49 PM
dleger75 dleger75 is offline
New User
 
Join Date: Sep 2011
Posts: 3
dleger75 is starting off with a positive reputation.
No it is a constant. From start up to cut off. It is getting really annoying.
Reply With Quote
  #13  
Old 09-18-2011, 10:59 PM
aquaman aquaman is offline
Elder User
 
Join Date: Jul 2005
Location: San Jose, CA
Posts: 970
aquaman is gaining momentum as a positive member of FTE.
Were any of the plugs fouled or more sooty compared to the others? That would be an indication of a bad coil causing a weak spark

If the EGR valve is stuck partially open, that would be a cause of rough idle also, but these days, I'd think a CEL would show up if that was the case
__________________
'05 F150 5.4L FX4 SCrew
'10 F350 6.4L Lariat FX4 CC SRW LWB
Reply With Quote
  #14  
Old 09-19-2011, 02:10 AM
t4m4m4 t4m4m4 is offline
Freshman User
 
Join Date: Sep 2011
Posts: 36
t4m4m4 is starting off with a positive reputation.
Quote:
Originally Posted by ShootinOK View Post
Napa, or buy online
Summit has them - a quick search even turned up Amazon Amazon.com: Lisle (LIS65600) Broken Spark Plug Remover for Ford Triton 3 Valve Engines: Automotive and thats about 1/2 what I paid.
Tool works great! Highly recommend. Just read instructions and be sure not to turn it in to far. Took me about 30 min. a plug...

Click the image to open in full size.
Reply With Quote
  #15  
Old 09-19-2011, 10:22 PM
dleger75 dleger75 is offline
New User
 
Join Date: Sep 2011
Posts: 3
dleger75 is starting off with a positive reputation.
Thanks aquaman. I really didn't pay attention due to the fact of them twisting off in the head. I then went into panic mode. Then I had to buy the tool.
Reply With Quote
Old 09-19-2011, 10:22 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough Running 05 F350 5.4 dukeshavenford Super Duty & Heavy Duty 8 08-08-2011 02:19 PM
2005 5.4L F150 back-firring beustice 2004 - 2008 F150 1 06-17-2010 12:33 PM
97 F-150 5.4 runs rough in mid range maxxf150 1997 - 2003 F150 6 01-01-2010 12:05 PM
2002 5.4 Rough idle (No Check Engine) JKTX21 1997 - 2003 F150 1 02-01-2009 02:28 PM
Diablo for 05 f150??? vancityf150 2004 - 2008 F150 3 06-05-2005 10:12 PM


Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 2004 - 2008 F150

Tags
05, 54, 54l, 82, bronco, engines, f150, ford, hot, idel, idle, idling, misses, revs, rough, truck, warm, wont

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 10:14 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. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup