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  #46  
Old 12-28-2010, 09:37 AM
modelageek modelageek is offline
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Exclamation Re: Random misfires when it snows

Quote:
Originally Posted by Hornblas View Post
Highway speed jerking/bucking

dude, this sounds like my problem..
one question..do you have a K&N filter by chance? If so, did you use the sticky gasket that came with it? I installed one this fall and I did not use it...Does seem like it has happened to me since I installed it...last winter I had no problems.
Otherwise, I do have a slow leak in one tire...but I stay on top of it and it does not seem to care if the pressure is low or not.

----------
Actually it seems like (after reading the post thoroughly) that we may be on to something with the intakes....Lets try to compile who has this problem versus the type of intake/filter used and see if we can find a common denominator.
well this is as good of a time as any to go on my rant ........please fill out your vehicle profiles with as much info as possible. it really does make a difference...if you have a k and n filter put it in there! if you don't have AC put it in in there....etc,etc,etc
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
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  #47  
Old 12-28-2010, 11:03 AM
Hornblas Hornblas is offline
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Default Re: Random misfires when it snows

Quote:
Originally Posted by modelageek View Post
well this is as good of a time as any to go on my rant ........please fill out your vehicle profiles with as much info as possible. it really does make a difference...if you have a k and n filter put it in there! if you don't have AC put it in in there....etc,etc,etc
Sig updated :P
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  #48  
Old 12-28-2010, 07:22 PM
mickblock mickblock is offline
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Default Re: Random misfires when it snows

Anyone having this misfire during snowy weather - I'm curious if you have these baffles near your intake:


The first one is on the front radiator cowling right side only:


Next baffle (looking down the space between the filter box and cowling) seems to be a trial add-on. Its a little box that surrounds the intake horn on all for sides:



last but not least (but hardest to photograph is some foam baffling surrounding this box that is fastened in place with pushpins that blocks snow filled air from flowing directly around the headlight :



Also I wonder if you guys all have the power dome hood design with is recessed lip that leaves a gap that you can pretty much see the top of the filter box when you look through it if not for that top baffle.
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  #49  
Old 12-29-2010, 05:40 AM
ranger024x4 ranger024x4 is offline
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Default Re: Random misfires when it snows

my airbox looks like that
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  #50  
Old 12-29-2010, 06:06 AM
modelageek modelageek is offline
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Default Re: Random misfires when it snows

I have never noticed an issues with the snow before....that being said I have the same airbox. some people pull that baffle out along with the small block box out.......it sounds cool and some people think it helps with getting air. that being said even if snowflakes got into the baffle they would still be stopped by the airfilter? but I like your out of the box thinking........
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).

Last edited by modelageek; 12-29-2010 at 06:38 AM.
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  #51  
Old 12-29-2010, 07:54 AM
Black04Ranger Black04Ranger is offline
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Default Re: Random misfires when it snows

Well guys... not sure if we have been able to diagnose this issue yet.... but I too had the very same issue a few nights ago... while driving home just at about 40-45mph with the 4x4 on or off... snow was coming down, and 5 times in about 20 miles it did the "skip/jump" that the OP was talking about.

I have an 04 4.0L ranger, with a K&N drop in filter only. Stock airbox and everything else. I've got 4 identical tires that are next to brand new. I also have brand new plugs, and brand new wires, and a tranny flush was performed months ago during summer.
Again, just like the OP, my truck never has a problem with the cold, and this issue only happened when it was snowing really bad.

The only thing extra I could think of at the time was that there is a shift point somewhere around 45mph on our truck, and the truck was sitting on the verge of that point for so long that it just jumped up or down a gear.....Thoughts?
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  #52  
Old 12-29-2010, 08:03 AM
ranger024x4 ranger024x4 is offline
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Default Re: Random misfires when it snows

I honestly dont think its a trans issue. From all the posts (on this site and r-f) it seems that it only affects 4.0L sohc motors. Also, I have a 5 speed manual, as do others. Im thinking this is a motor issue rather than a drive train issue more and more.
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  #53  
Old 12-29-2010, 11:10 AM
Hornblas Hornblas is offline
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Default Re: Random misfires when it snows

Quote:
Originally Posted by modelageek View Post
I have never noticed an issues with the snow before....that being said I have the same airbox. some people pull that baffle out along with the small block box out.......it sounds cool and some people think it helps with getting air. that being said even if snowflakes got into the baffle they would still be stopped by the airfilter? but I like your out of the box thinking........
But...do you have a K&N or similar hi flow drop in filter??
I think these MAY have something to do with it...Yesterday I was driving and it was very windy...blowing snow around and my truck acted up almost without exception when I drove through a windy spot.
snowflakes are more like ashes...they blow around...they could get sucked up and in..possibly through the looser weave of the Reusable filters cotton filter medium...and into the MAF..more and more I ponder this..the more sense it makes.Even if they are small and melt...they would almost be atomized by the air flow..and hence sucked in through the filter.This would also explain the randomness,the perceived effect of wind,and why it only happens seemingly while snowflakes are present in the air.
Next time they are calling for snow in MD, I plan on swapping back to a paper filter and seeing if a difference is made. Maybe this is just "the nature of the beast" type of thing
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  #54  
Old 12-29-2010, 02:20 PM
shawhill shawhill is offline
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Default Re: Random misfires when it snows

My '02 4WD does not have the baffle (pic 1), does have the box around the air horn (pic 2) and does not have the extra foam baffle (pic 3). Also I don't have the K&N filter. I've been using several types of good quality paper filters over the years. Seems to me that if a lot of snow was getting onto the upstream side of the filter, it might block off air flow. But my experience is that it takes very little snow in the air to cause the hiccups to start.
As an aside, I have to visit the dealer next week to deal with an inoperative 4WD problem and I intend to push to get a Ford tech to visit. All this correspondence here will be very helpful; I had no idea there were others out there with a similar problem. Will keep you posted of course.
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  #55  
Old 12-29-2010, 10:13 PM
Swingarm7e Swingarm7e is offline
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Default Re: Random misfires when it snows

Quote:
Originally Posted by ranger024x4 View Post
what motor do you have
'06 with a 4.0
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  #56  
Old 12-30-2010, 05:03 AM
modelageek modelageek is offline
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Default Re: Random misfires when it snows

so it looks like the oldest truck that this happens to is a 2001 and they all have the sohc 4.0. is this accurate? are there any 2wd trucks with this issue?

----------

Quote:
Originally Posted by shawhill View Post
My '02 4WD does not have the baffle (pic 1), does have the box around the air horn (pic 2) and does not have the extra foam baffle (pic 3). Also I don't have the K&N filter. I've been using several types of good quality paper filters over the years. Seems to me that if a lot of snow was getting onto the upstream side of the filter, it might block off air flow. But my experience is that it takes very little snow in the air to cause the hiccups to start.
As an aside, I have to visit the dealer next week to deal with an inoperative 4WD problem and I intend to push to get a Ford tech to visit. All this correspondence here will be very helpful; I had no idea there were others out there with a similar problem. Will keep you posted of course.
I wonder if the 4wd is not working because of a vacuum issue. maybe snow is getting sucked in through a open vacuum line?
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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).
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  #57  
Old 01-02-2011, 02:55 PM
rinesy rinesy is offline
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Default Re: Random misfires when it snows

Hey Guys,

I was just researching this same problem in the ranger I just baught, its a 2006 FX4 Level II 5spd, It was snowing today and it exhibited all of these symptoms. Just wondering if anyone has had any luck...
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  #58  
Old 01-02-2011, 03:05 PM
ranger024x4 ranger024x4 is offline
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Default Re: Random misfires when it snows

no luck yet.


Well, I found another truck doing this. One of my friends in H/S was back in town for Christmas. When I got to talking to him at this bar, I found out that his truck does this as well.

specs of his:
03 xlt 4.0 4x4 auto with an exhaust and air force one intake.


So, We were looking though his parts and he decided to put his stock intake back on. So When we put it on, I took the silencer out as well as that baffle thing that it slides into. Also while swaping it out, I noticed his maf was filthy so I cleaned it. Ill let you guys know if it helps out.

I also need to check my maf and see if it is dirty
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  #59  
Old 01-02-2011, 04:30 PM
dubbya dubbya is offline
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Default Re: Random misfires when it snows

Like I previously posted, I too had this same problem- 01 4.0 4WD Automatic. All I can say is that after putting up with this problem for one winter (only when it snows hesitations), I found that one clip on the stock air filter cover was not fastened properly (Looked as if it was, but it wasn't) . I fastened the clips and have had not had that hesitation in two Michigan winters. I sincerely believe that this issue was snow getting in the intake. The MAF sensor is just past the filter. Someone could try opening the filter cover and introducing some light snow to see if the issue is reproduced. I would, but I no longer have this problem.
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  #60  
Old 01-02-2011, 05:08 PM
ranger024x4 ranger024x4 is offline
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Default Re: Random misfires when it snows

Quote:
Originally Posted by dubbya View Post
Like I previously posted, I too had this same problem- 01 4.0 4WD Automatic. All I can say is that after putting up with this problem for one winter (only when it snows hesitations), I found that one clip on the stock air filter cover was not fastened properly (Looked as if it was, but it wasn't) . I fastened the clips and have had not had that hesitation in two Michigan winters. I sincerely believe that this issue was snow getting in the intake. The MAF sensor is just past the filter. Someone could try opening the filter cover and introducing some light snow to see if the issue is reproduced. I would, but I no longer have this problem.
awesome. I will look into this on my truck. thanks!
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