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12-27-2010, 10:41 AM
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Liking the Ford Ranger Forum
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Join Date: Mar 2010
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Highway speed jerking/bucking
Hey guys, Ive searched the forums and been able to find very little to help me with my issue save the possibility of bad plug wires...(Witch may be it or a seperate issue because of my recent terrible MPG.)
I have a 2005 Fx4 Level II 4.0 L. It has about 55,000 on it.
Lately, I have been noticing a single jerk or buck every so often when cruising at about 55-60 mph.
Seems to be getting more frequent and it varies in intensity.
It SEEMS to only happen when load(gas) is applied/unapplied and when in overdrive. Otherwise the truck runs great.
Does not SEEM to be transmission slippage..seems more like a bind or something
No Tach surge at all..no lights. possibly a tiny Clunk.
Does it in 4 or 2 WD.
only thing changed is the recent addition of a K&N Filter. MAF?
Could this be an issue with the factory locker?(Notice it more when it is very cold outside)
Truck has always felt like it is dragging a sack of potatoes...figured it was nature of the beast.
Thank you in advance for any info.
__________________
2005 Ranger Fx4 level II 4.0L. Flowmaster 40 series Cat back dual exaust,K&N drop in Air filter, brush bar, nerf bars,PIAA Fog lamps and T bar crank...otherwise, bone stock.
Last edited by Hornblas; 12-27-2010 at 10:42 AM.
Reason: spelling..:(
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12-27-2010, 10:43 AM
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slut life
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Join Date: Oct 2010
Posts: 3,031
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Re: Highway speed jerking/bucking
possibly sticking brakes?
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99 extended cab, 4.0, auto, 33s, 4x4 lifted with some stuff done
98 2wd 2.5, 5 speed, dropped with some stuff done
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12-27-2010, 10:44 AM
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Ban Survivor. (x2)
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Join Date: Jun 2010
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Re: Highway speed jerking/bucking
My 96 ranger does this buck every so often, usually when in 5th gear going up hill or under big load. Almost like its started to lug out.
You say it feels like your dragging a sack of potatoes, is it possible the ebrake is partially engaged? either at the wheel or with the foot pedal? and the light is not on?
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12-27-2010, 10:49 AM
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slut life
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Join Date: Oct 2010
Posts: 3,031
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Re: Highway speed jerking/bucking
on my 90 that i had, the truck would do something similar now that i think about it, it turned out to be the rear end had chipped a ring tooth, and then the whole rear end went BOOM a few months later...
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99 extended cab, 4.0, auto, 33s, 4x4 lifted with some stuff done
98 2wd 2.5, 5 speed, dropped with some stuff done
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12-27-2010, 11:15 AM
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Banned
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Join Date: Mar 2010
Posts: 14,046
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Re: Highway speed jerking/bucking
I had a 93 XL that did that and it was plugs,wires and a bad coil pack. Check them but with only 55k on your truck that may not be it
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12-27-2010, 12:44 PM
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Liking the Ford Ranger Forum
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Join Date: Mar 2010
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Re: Highway speed jerking/bucking
Well, no brake light..no lights at all.
I will have to pull the wheels and check for irregular brake wear.
If it does happen to be like a chipped pinion gear..I guess I find out when it goes boom..lol
for S &G's Im gonna do a tune up and see if that makes a difference...Ill post results soon. Thank you.
__________________
2005 Ranger Fx4 level II 4.0L. Flowmaster 40 series Cat back dual exaust,K&N drop in Air filter, brush bar, nerf bars,PIAA Fog lamps and T bar crank...otherwise, bone stock.
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12-27-2010, 01:01 PM
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dumpster fire
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Join Date: Sep 2010
Posts: 5,363
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Re: Highway speed jerking/bucking
does it happen to only do it when it snows?
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2017 Ford Fiesta ST
2014 Ford Escape Titanium Ecoboost AWD
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12-27-2010, 09:40 PM
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Liking the Ford Ranger Forum
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Join Date: Mar 2010
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Re: Highway speed jerking/bucking
Quote:
Originally Posted by ranger024x4
does it happen to only do it when it snows?
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I have only noticed it with snow yes...first time it did it, it had just begun to snow....there was a dusting on the road...today, there was melting snow...mostly wet pavement...and high winds...could that be a factor?
__________________
2005 Ranger Fx4 level II 4.0L. Flowmaster 40 series Cat back dual exaust,K&N drop in Air filter, brush bar, nerf bars,PIAA Fog lamps and T bar crank...otherwise, bone stock.
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12-27-2010, 09:53 PM
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Chrome Dont Get You Home
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Join Date: Dec 2009
Posts: 1,169
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Re: Highway speed jerking/bucking
mabye its your locker engaging due to some slippery conditions?
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1990 Ranger Extended Cab
2.9L V6 5 Speed Transmission
Planning to put a 347 and a T-5 in it eventually
Quote:
Originally Posted by FireRanger
It looks like someone attacked the front of the truck with a bedazzler.
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12-27-2010, 11:01 PM
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www.shanewootenband.com
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Join Date: Oct 2010
Posts: 1,896
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Re: Highway speed jerking/bucking
have you serviced the trans? it about due..
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MY BUILD THREAD
1999 MAZDA 2500SE, 2.5L 4-clanger, 5 speed, Green n slow. Rangers as daily drivers since 1988.
ASE Certified Mechanic, Builder of Show Destroying Protouring and Classic cars..
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12-28-2010, 12:11 AM
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dumpster fire
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Join Date: Sep 2010
Posts: 5,363
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Re: Highway speed jerking/bucking
__________________
2017 Ford Fiesta ST
2014 Ford Escape Titanium Ecoboost AWD
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12-28-2010, 08:47 AM
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Liking the Ford Ranger Forum
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Join Date: Mar 2010
Posts: 24
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Re: Highway speed jerking/bucking
Quote:
Originally Posted by ranger024x4
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Dude, thanks, that sounds very similar...I'll investigate
__________________
2005 Ranger Fx4 level II 4.0L. Flowmaster 40 series Cat back dual exaust,K&N drop in Air filter, brush bar, nerf bars,PIAA Fog lamps and T bar crank...otherwise, bone stock.
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02-13-2012, 10:16 AM
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Learning to use the forums
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Join Date: Feb 2012
Posts: 3
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Re: Highway speed jerking/bucking
Hi all my 2002 ford ranger is also doing this , one thing i noticed is it only does it when it snows even very slight. i thought it was bad gas so i used heat gas treatment and it would seem to go away . then it would come right back next time it snowed. i checked to make sure nothing was unhooked I.E like the hose from the air filter and such nothing was unhooked. it has about 159000 on it but other then that runs great. Im glad to see that im not the only one having this issue so maybe i can get it resolved . any help would be much appreciated!
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Quote:
Originally Posted by joshuat143
Hi all my 2002 ford ranger is also doing this , one thing i noticed is it only does it when it snows even very slight. i thought it was bad gas so i used heat gas treatment and it would seem to go away . then it would come right back next time it snowed. i checked to make sure nothing was unhooked I.E like the hose from the air filter and such nothing was unhooked. it has about 159000 on it but other then that runs great. Im glad to see that im not the only one having this issue so maybe i can get it resolved . any help would be much appreciated!
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also there is no snow build up on the ground at all just flying in the air .
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02-14-2012, 08:19 AM
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Liking the Ford Ranger Forum
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Join Date: Mar 2010
Posts: 24
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Quote:
Originally Posted by joshuat143
Hi all my 2002 ford ranger is also doing this , one thing i noticed is it only does it when it snows even very slight. i thought it was bad gas so i used heat gas treatment and it would seem to go away . then it would come right back next time it snowed. i checked to make sure nothing was unhooked I.E like the hose from the air filter and such nothing was unhooked. it has about 159000 on it but other then that runs great. Im glad to see that im not the only one having this issue so maybe i can get it resolved . any help would be much appreciated!
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also there is no snow build up on the ground at all just flying in the air .
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I have since figured out that it was indeed the k and n filter and snowflakes..replaced with a paper filter for winter and problem resolved. Thanks guys!!
__________________
2005 Ranger Fx4 level II 4.0L. Flowmaster 40 series Cat back dual exaust,K&N drop in Air filter, brush bar, nerf bars,PIAA Fog lamps and T bar crank...otherwise, bone stock.
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02-14-2012, 05:52 PM
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2000 v6 4.0 4x4
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Join Date: Aug 2011
Posts: 10
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Re: Highway speed jerking/bucking
If it starts again check your fuel pressure. If you have low pressure the truck will feel slow and misfire.
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