Vibration while turning!
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Freshman User
Joined: Aug 2006
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Vibration while turning!
First of all, I am a newbie for actually posting here at FTEF, however over the last year I have learned a lot of valuable info. from the very informed people on this site. I would like to thank everyone who has taken the time to help other people with there dilemmas. Let's keep the Ford name alive and proud! So, here is my problem; I am getting a vibration from the rear end when turning corners, it is worse when I pull a trailer. I really have to accelerate very slowly when I am pulling to avoid major vibration. The entire truck vibrates violently if I accelerate too quickly. When I am running without a trailer I don't normally feel anything out of the ordinary all. I have a 2002 SD long bed super cab, which I bought used a year ago. It has a limited slip rearend, automatic trans. and long bed. Can anybody help me? Thanks for your time and patience!
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
welcome to FTE..sounds like the trans is slipping a little..pull the stick and see if trans flued is brown or burnt smelling...do you have gauges?? what are they reading??? you have any mods?? another thing you could try is changing the rear end flued..make sure you add the additives needed for limited slip...its called friction modifier from motor craft...
Elder User
Joined: Aug 2006
Posts: 870
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From: Mountaintop, PA
MIne does this too going around turns with a slight load on the drive line, always on an incline at real slow speeds. IOW, the planets have to be alligned. In mine it feels like the rear axle. Does it so little I have not looked into it. I am subscribing to this thread to see what it turns out to be for you paulcurr.
Elder User
Joined: Aug 2006
Posts: 870
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From: Mountaintop, PA
I just changed diff fluid (syn)30,000 miles ago, and put in one bottle of the recommended friction modifier. Did I do anything wrong?
Posting Guru
Joined: Jul 2004
Posts: 1,235
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From: Kamloops, BC
GUYS !! Check your rear springs !!!! I just did another post about checking rear springs... You might have a broken leaf. It seems fairly common from what I've seen.. I'm replacing both rear springs today because both are snapped in half... Its the main leaf that breaks ! The one that has the eyes on the end to connect to the shackles !
This may be your vibration problem !
Russ
This may be your vibration problem !
Russ
Elder User
Joined: Aug 2006
Posts: 870
Likes: 0
From: Mountaintop, PA
GUYS !! Check your rear springs !!!! I just did another post about checking rear springs... You might have a broken leaf. It seems fairly common from what I've seen.. I'm replacing both rear springs today because both are snapped in half... Its the main leaf that breaks ! The one that has the eyes on the end to connect to the shackles !
This may be your vibration problem !
Russ
This may be your vibration problem !
Russ
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Elder User
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From: Mountaintop, PA
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Freshman User
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Okay, first I will answer some questions. I just had my trans. professionally built about 1,800 miles ago and the vibration never changed. I do have gages and watch them closely. My trans fluid is still bright red and smells new. I have AFE intake, AFE 4" exhaust and a DP tuner, which rocks by the way. I just checked my leaf spring and they are in good shape. I also put new Reflex shocks on the truck about 5,000 miles ago. I also changed my transfercase fluid when I did the trans. Other than that I don't know what has been done to the truck.
I am going to explain my vibration a little more in detail. When I turn and accelerate slowly with a load it seems to vibrate a little. If I accelerate like I would like to, the truck actually shakes hard as if you were in an earthquake. The heavier the load the worse it gets. When I run without a load, I barely notice it unless I put the hammer down around a corner, from a stand still.
Sounds like I need to change the rearend fluid. What kind should I use? It does have the limited slip, however, it doesn't seem to work real well.
I am going to explain my vibration a little more in detail. When I turn and accelerate slowly with a load it seems to vibrate a little. If I accelerate like I would like to, the truck actually shakes hard as if you were in an earthquake. The heavier the load the worse it gets. When I run without a load, I barely notice it unless I put the hammer down around a corner, from a stand still.
Sounds like I need to change the rearend fluid. What kind should I use? It does have the limited slip, however, it doesn't seem to work real well.
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