Hard jerk when driving at constant speed - 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 03-30-2011
MLWilley's Avatar
Member
Thread Starter
 
Join Date: Mar 2011
Location: Seymour, IN
Posts: 27
Hard jerk when driving at constant speed

I installed a K&N filter into my truck this weekend, 2004 4.0L 4x4 5 speed. I have had this happen 5 or so times now i'm not sure if it is because of the filter or just somthing going wrong. Ive noticed while in 4th or 5th gear going at a constant speed at or around 2000 rpm. cruise control set or not set either one, it acts like the engine shuts off for a split second then regains everything back to normal operating condition, throws no codes or anything. Its like it stalls or something, but it jerks hard guessing just the transmission catching back up with the engine? Any help here would be awesome, Thanks! Levi
Reply With Quote
  #2  
Old 03-30-2011
Member
 
Join Date: Feb 2011
Location: Ontario, Canada
Posts: 27
Sounds like the engine is just coughing a bit under load. Mine coughs under heavy load in 4 and 5 gear at around 2000 RPM. Are you driving on hills, trying to accelerate...etc?

It could be related to the filter. I don't know much about K&N' and how they affect performance.
Reply With Quote
  #3  
Old 03-30-2011
MLWilley's Avatar
Member
Thread Starter
 
Join Date: Mar 2011
Location: Seymour, IN
Posts: 27
This is driving on a flat highway nothing extra on the truck as far as weight.
Reply With Quote
  #4  
Old 03-30-2011
powerranger262's Avatar
Member
iTrader: (1)
 
Join Date: Feb 2009
Location: Hartford, WI
Posts: 1,222
You might want to clean your MAF. Some oil from the filter may have gotten on the element, sending wrong info to computer.
I did have this same problem, which turned out to be a cracked spark plug, but try the MAF first. Also, something else easy to try, would be your fuel filter.
Reply With Quote
  #5  
Old 04-02-2011
StratGT's Avatar
Member
 
Join Date: Sep 2009
Location: Mississauga
Posts: 54
Mine was doing something similar, turns out it was electrical like mentioned in the post above. My Ignition Coil was shorting out, but the truck only jerked when it was in overdrive.
Reply With Quote
  #6  
Old 04-16-2011
devildawg's Avatar
Member
 
Join Date: Feb 2011
Location: Oregon city, OR
Posts: 9
Mine is doing the same thing now and its driving me crazy. Just replaced all of the plugs and wires also cleaned the MAF sensor and new fuel filter. New k&n air filter also! It didn't fix anything. The only code I am getting is p1443 which I dont think would have anything to do with an engine miss? Correct me if I am wrong!
Reply With Quote
  #7  
Old 05-30-2011
klc317's Avatar
Member
 
Join Date: Sep 2006
Location: Cincinnati, OH
Posts: 950
My '03 would have that "jerk" occassionaly while cruising on the highway in OD when I first got it last summer with 57K on the clock. Not sure which one of these fixed it, but it doesn't do it anymore. In fact I forgot about it until I read this post..I've changed..

Fuel FIlter, plugs, wires, cleaned MAF, TB, PCV valve, etc (all motorcraft parts). I did notice that it would have a barely noticeable stumble sometimes at idle before I swapped out the plug wires. They looked to be in great shape but after 8 years I'm sure they needed replaced. Everything seems tip top now. I found that O'Reilly autoparts down the street sells actual Motorcraft parts now so that makes it easier to find on a weekend if the the dealer is closed.

Now has almost 61K miles.
Reply With Quote
  #8  
Old 05-31-2011
06RangerXLT's Avatar
Member
iTrader: (2)
 
Join Date: Feb 2011
Location: Halton Hills, Ont
Posts: 1,685
mine was doing this as well. it was way worse before i did plugs and wires.

remember guys, just because you replaced the plugs doesnt mean you didnt crack on putting them in, and caused the same problem again.

pull the boot off the plugs and give the porcelain a wiggle. you might be surprised.

also, fuel filter would be a god idea. it hasnt happened to me in a while.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Its fixed! (buck/jerk at cruising speeds, stall when put in park) Crunchy General Ford Ranger Discussion 7 10-07-2013 10:00 AM
Hic-up/Jerk in 5th from 55-70 mph going Uphill kendawg DOHC - 2.3L Duratec / Mazda L Engines 1 03-17-2012 03:15 PM
Engine starts choking and misfires then starts to jerk violently 97ranger666 SOHC - 2.3L & 2.5L Lima Engines 3 10-09-2011 12:36 PM
Jerk/Jolt Crunchy General Ford Ranger Discussion 26 02-28-2008 08:15 PM
Rough Jerk in Brakes or Transmission... mar01Edge 4.0L OHV & SOHC V6 Tech 16 10-11-2006 07:38 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 09:20 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.