2005 5.4l multiple misfire P0300 code - Ford Truck Enthusiasts Forums



1999 to 2016 Super Duty 1999 to 2016 Ford F250, F350, F450 and F550 Super Duty with diesel V8 and gas V8 and V10 engines SPONSORED BY:
Advertisement

2005 5.4l multiple misfire P0300 code

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 06-17-2010, 06:05 PM
barry1me barry1me is offline
Senior User
Thread Starter
 
Join Date: Oct 2005
Posts: 132
barry1me is starting off with a positive reputation.
2005 5.4l multiple misfire P0300 code

I have a 05 with 117k miles on it, and am getting a multiple misfire code. Truck runs good at idle and under normal acceleration. If you WOT throttle truck from a dead dig or from any speed it bucks and misses like crazy through the entire RPM range. Any idea what it could be? I have cleaned throttle body, new air filter, and fuel filter. Also have ran fuel cleaner through a few tanks and nothing has helped it. I was wondering if these trucks have a EGR valve on it?
Reply With Quote
  #2  
Old 06-17-2010, 07:44 PM
Robs06SuperDuty's Avatar
Robs06SuperDuty Robs06SuperDuty is offline
Elder User
 
Join Date: Dec 2006
Location: Gettysburg, PA
Posts: 725
Robs06SuperDuty is gaining momentum as a positive member of FTE.Robs06SuperDuty is gaining momentum as a positive member of FTE.
prolly a coil or a coils are about due, along with spark plugs. I had my plugs changed at 60K and the gaps were worn the hell out! had to have one of my coils replaced around 57K cuz it took a dump.
Reply With Quote
  #3  
Old 06-17-2010, 09:51 PM
barry1me barry1me is offline
Senior User
Thread Starter
 
Join Date: Oct 2005
Posts: 132
barry1me is starting off with a positive reputation.
Quote:
Originally Posted by Robs06SuperDuty View Post
prolly a coil or a coils are about due, along with spark plugs. I had my plugs changed at 60K and the gaps were worn the hell out! had to have one of my coils replaced around 57K cuz it took a dump.
I was thinking it could be some plugs but then from what I have heard if you had one or even three cylinders missing it would have shown up on the scanner. This showed a random multiple misfire code which lead me to think I have several cylinders missing.
Reply With Quote
  #4  
Old 06-18-2010, 02:36 AM
redford's Avatar
redford redford is online now
Moderator
 
Join Date: Sep 2000
Location: Wausau WI
Posts: 17,916
redford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputationredford has a superb reputation
Was the 100k tune up done on the engine? What brand of spark plug was used?
Reply With Quote
  #5  
Old 06-18-2010, 06:27 AM
barry1me barry1me is offline
Senior User
Thread Starter
 
Join Date: Oct 2005
Posts: 132
barry1me is starting off with a positive reputation.
Quote:
Originally Posted by redford View Post
Was the 100k tune up done on the engine? What brand of spark plug was used?
i bought the truck used, and I dont know if it has had new plugs yet.
Reply With Quote
  #6  
Old 06-19-2010, 10:53 PM
barry1me barry1me is offline
Senior User
Thread Starter
 
Join Date: Oct 2005
Posts: 132
barry1me is starting off with a positive reputation.
do these motors have an EGR valve?
Reply With Quote
  #7  
Old 06-20-2010, 06:37 AM
scraprat's Avatar
scraprat scraprat is online now
Posting Guru
 
Join Date: Jan 2002
Location: SD
Posts: 2,450
scraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud ofscraprat has much to be proud of
Seeing that you bought it used and don't know if the plugs where changed start there and change them. Then if it still doing it find the bad COP. Check to make sure there all on good to.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2004 Ford F150 5.4 Triton 3V Vin5 Rough Idle Cylinder 3 Misfire Wildboy402 2004 - 2008 F150 12 12-24-2015 01:42 AM
Running really bad Smokey583 Modular V8 (4.6L, 5.4L) 4 05-26-2015 05:26 PM
05 expedition multiple codes. 83sd Expedition & Navigator 31 05-12-2015 08:07 PM
It runs awful when it rains 88 Bronco Ranger & B-Series 21 12-22-2009 12:46 PM
Fuel problems Steveaustin 2004 - 2008 F150 9 05-24-2009 11:07 AM


Go Back   Ford Truck Enthusiasts Forums >

Tags
05, 2005, 54, 54l, code, f150, f250, ford, liter, misfire, p0300, po300, triton, trouble, truck

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 08:47 AM.


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.