P0304, P0401, P0455 truck running bad - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-08-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
P0304, P0401, P0455 truck running bad

Hey guys about a week ago my truck started running real bad, down on power a lot, and very shaky at any speed or at idle, I went to autozone to get the codes and i got the 3 above in the title, I had before 0171 and 0174 and the truck ran fine and now that i got these 3 codes it runs horrible, any ideas if they are connected? i havent done anythign to the truck in the time that they came up so i assume its gotta be something connected. I do know i have a hose that goes to the vaccum hub thats split but it has been split for a while. any ideas what the problem is? its a 98 4.0 thanks.
Reply With Quote
  #2  
Old 07-09-2011
wvcat's Avatar
Member
iTrader: (4)
 
Join Date: May 2007
Location: New Cumberland
Posts: 2,044
P0304-Cylinder 4 misfire
P0401-EGR Flow
P0455 - EVAP Control System Leak Detected
P0171 - System to Lean(Bank 1)
P0174 - System to Lean (Bank 2)
Here's some trouble shooting info
http://home.comcast.net/~miracerros/...wertrain_1.htm
It sounds to me like a major vacumn leak.
Reply With Quote
  #3  
Old 07-09-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
Do u think that that vaccum hose that goes to the hhub may have caused it? Any info on the evap system Idk anything about it.

Last edited by j99ranger4x4; 07-09-2011 at 10:46 AM.
Reply With Quote
  #4  
Old 07-10-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
i checked all the vaccum hoses in engine bay and cant find any leaks in those.
Reply With Quote
  #5  
Old 07-12-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
think that hose to the hub may have done it, as i read somewhere on here the egr is vaccum controlled, makes sense, i put hose on and it started running better, going on an hour trip so we will see here in a bit.
Reply With Quote
  #6  
Old 07-12-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
now all i have is a cylinder 4 misfire, after the plug what are the most likely suspects?
Reply With Quote
  #7  
Old 07-14-2011
j99ranger4x4's Avatar
Member
Thread Starter
iTrader: (5)
 
Join Date: Sep 2008
Location: Delaware, OH
Posts: 1,381
replaced the plug wires, seemed to run better overall but can still tell there is misfire.
Reply With Quote
  #8  
Old 07-20-2011
Member
 
Join Date: Jul 2011
Location: San Antonio, Texas
Posts: 11
did you change the plugs too? if thats not it could be a coil!
how many miles are on it?
if thats not it, could be out of time, cam sensor or crank sensor!
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2000 Ranger p0171 and p0455 (pending) mikeyg6754 SOHC - 2.3L & 2.5L Lima Engines 2 11-06-2014 08:48 PM
p0455 j99ranger4x4 4.0L OHV & SOHC V6 Tech 0 06-16-2013 11:57 AM
Check engine light came on: Codes P0054 and P0455 winks General Ford Ranger Discussion 27 06-25-2010 07:31 AM
Need help... CEL P0455... What could it be? Ideas? rngprerunner General Ford Ranger Discussion 5 06-30-2008 09:06 AM
Running a P0401 Trigger 4.0L OHV & SOHC V6 Tech 16 06-21-2008 08:27 PM


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 01:32 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.