Bucking ranger - 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 11-29-2009
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
Bucking ranger

I've got a 02 FX4 and have been having some problems with it bucking under acceleration. I had a similar problem a while back with it doing this when it shifted into 4rth gear. I replaced the plugs and wires, and it went away and I was happy as hell. But now, with about 1,000 miles on these plugs/wires, it is bucking worse than before, all the way through the gears if I am really on it.

I replaced the fuel filter about 8,000 miles ago. Could it use a new one already? There has never been any problems starting the truck, but I am not ruling out the fuel pump.

Also, there is 89,000 miles on the truck, coil pack maybe?

Help.
Reply With Quote
  #2  
Old 11-29-2009
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
Is there any 'clunk' coming from the rear axle? I suspect the oh so awesome blowing up early model Torsen differential...
Reply With Quote
  #3  
Old 11-29-2009
Toreador4x4's Avatar
Member
iTrader: (6)
 
Join Date: Apr 2007
Location: Livonia, MI
Posts: 3,958
do you have a k&n air filter? or a fram air filter? a problem with these trucks i see at work and experienced on my dads truck is that if the air filter gasket isnt seated properly (most frams are too thin) or the air comes in through the filter with no restriction (K&N) it causes a voltage spike at the MAF which causes a "buck" symptom. just something to check. make sure that the air box lid is secured and the filter is sealing well
Reply With Quote
  #4  
Old 11-29-2009
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
I really hope it's not the torsen. I do have a fram air hog drop in filter, but I have had it for quite some time. I will go check the seals on the box now, and then I am going to clean the MAF again to see if that helps at all.
Reply With Quote
  #5  
Old 11-29-2009
Toreador4x4's Avatar
Member
iTrader: (6)
 
Join Date: Apr 2007
Location: Livonia, MI
Posts: 3,958
put the stock filter or a motorcraft filter back in after cleaning and try that. the oil from the airhog could have gotten on the MAF or all the dust, pollen, bag ladies, small children and buffalo that the airhog lets through into the air intake stream
Reply With Quote
  #6  
Old 11-29-2009
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
I'll have to pick up a filter tomorrow and try that out. Thanks.
Reply With Quote
  #7  
Old 11-30-2009
nross's Avatar
Member
 
Join Date: Nov 2008
Location: Binghamton, NY
Posts: 256
My truck went though this fit, it was the air filter, I had used a fram air filter... i went back to motorcraft and the truck for some reason shifted alot better in the gears. I did not have the problem with the STP filter though... but that was a long time ago I used that.
Reply With Quote
  #8  
Old 12-10-2009
randyl's Avatar
Member
 
Join Date: Oct 2009
Location: sudbury ontario
Posts: 98
my jeep was doing that to, so i seafoamed the **** out of it and it fixed it .. i think it was bad gas but meh it's fixed now
Reply With Quote
  #9  
Old 12-10-2009
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
I switched the filter back and it helped a little. I lost my torx bit, so I didn't clean the MAf yet. I'm thinking that should help it out.
Reply With Quote
  #10  
Old 12-10-2009
Member
 
Join Date: Sep 2009
Location: Orlando, Florida
Posts: 15
How do you properly clean the MAF sensor? I got a code on it yesterday...my truck was bucking a lot too, but I think I may have inadvertently fixed it when I took off the air filter hose to get to my pulleys that I replaced...
Reply With Quote
  #11  
Old 12-10-2009
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
Go buy a can of MAF cleaner, unplug, unscrew, carefully take it out, spray it down, let it dry completely, reinstall. Just make sure to be carefull not to touch the wire that you are cleaning with anything, and also make sure that it is totally dry before you put it back in.
Reply With Quote
  #12  
Old 01-19-2010
powerranger262's Avatar
Member
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
Just wanted to post back on how I got it to go away. I took the throttle body off and cleaned all the crap out of there, cleaned the intake tube, and the MAF, but it didn't go away. Yesterday I cleaned the IAC, gone baby!
Reply With Quote
  #13  
Old 01-19-2010
My91Ranger's Avatar
Member
iTrader: (1)
 
Join Date: Apr 2007
Location: Roseville, Michigan
Posts: 2,252
Hmm that's interesting to me. Thanks for letting us know how you fixed it.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Ranger is bucking like a pissed off horse patrickmanuel General Ford Ranger Discussion 1 03-11-2014 11:20 AM
Why is my ranger bucking? simnsez00 General Ford Ranger Discussion 10 04-04-2011 09:13 PM
ranger bucking sladealive Member Introductions 1 08-23-2010 11:54 PM
Bucking 2.5L ranger1998xlt SOHC - 2.3L & 2.5L Lima Engines 1 02-06-2007 12:35 PM
Running really bad-Stuttering-Bucking bmxrider379 4.0L OHV & SOHC V6 Tech 4 09-11-2006 07:04 AM


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 07:22 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.