rear axle Clunk
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Thanks, Andy, for your thoughts. As I know very little about mechanical stuff, I really have no idea what it might be. However, the noise/metallic clunk occurs consistently when I shift it into gear (AOD/overdrive gear) with the truck at a standstill and my foot on the brake. It sounds like it is coming from underneath, towards the rear of the truck--like a U-joint noise, but these have been checked/replaced. Any other thoughts?
Frank.
Frank.
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From: Michigan
Originally Posted by quicklook2
i looked in your gallery and that is one nice looking f150! leave the seats alone! i am so envious.
RZ
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From: Michigan
Originally Posted by andym
I think your dealer is full of it. They like to make up explanations when they don't have a good answer, make it expensive to fix to discourage you from proving them wrong, then tell you it won't make a difference whether it's fixed or not to further convince you not to do it.
There are a ton of causes for the clunk. I'd say about half the time, the slip yoke out the back of the transfer case is making the noise. That's what it is on mine. Other possible causes are tranny mounts, bushings, cracked crossmembers, loose/cracked springs, and probably about six others I'm forgetting.
There are a ton of causes for the clunk. I'd say about half the time, the slip yoke out the back of the transfer case is making the noise. That's what it is on mine. Other possible causes are tranny mounts, bushings, cracked crossmembers, loose/cracked springs, and probably about six others I'm forgetting.
I am going to find the clunk someday, somehow, I just about laid under my sons truck as he shifted into drive to try to pin down his clunk. Wonder if he will do that for me. :>
RZ
Last edited by rrzielin; Aug 10, 2005 at 10:20 PM.
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From: Bonita Springs FL
Originally Posted by Frank Lang
Thanks, Andy, for your thoughts. As I know very little about mechanical stuff, I really have no idea what it might be. However, the noise/metallic clunk occurs consistently when I shift it into gear (AOD/overdrive gear) with the truck at a standstill and my foot on the brake. It sounds like it is coming from underneath, towards the rear of the truck--like a U-joint noise, but these have been checked/replaced. Any other thoughts?
Frank.
Frank.
My guess is that it's pinion-related.
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Mine is a 4 x 2, so transfer case won't be an issue. I guess I will have to get under the truck while my wife shifts it into gear to see where it "clunks"--I hope I'm in her good books, and that she doesn't take the opportunity to drive over me!
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From: Michigan
Originally Posted by Frank Lang
Mine is a 4 x 2, so transfer case won't be an issue. I guess I will have to get under the truck while my wife shifts it into gear to see where it "clunks"--I hope I'm in her good books, and that she doesn't take the opportunity to drive over me!
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From: central valley California
Question What tranny do you have? my 95 came equiped with the 4r7w and for a little over a month I chased down the clunk noise pulled my diff had my drive line at a shop that specialized in drive lines and come to find out the noise was coming out of my tranny..it would seem that the tail shaft on some models of Fords trannys would weaken after towing and cause play in the tail end..and that noise would carry down the drive line to the diff..that may or may not be your problem..easy check is to pull your drive line out of the tail end of the tranny and 1 push in on the tail shaft shoul move slightly more than an inch and you have a bearing problem in the tranny. 2 see if you can move the tail shaft side to side if so you may have a problem if there is alot of play...
Just know this when towing and everything comes to a stop on the back end of your truck... IE boat trailer exspecially without trailer brake your tranny takes the blunt end of all that force..
Just know this when towing and everything comes to a stop on the back end of your truck... IE boat trailer exspecially without trailer brake your tranny takes the blunt end of all that force..
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From: Michigan
Thanks Jack, I have an E4OD trans. What you describe sounds like a real good possiblity of what I might find. This truck was used to pull a boat and a medium tractor on a light construction type trailer, it also has an electric brake controller. I have thought all along, in my sons truck and mine, that this clunk was coming from something to do with the driveshaft and it's angle at the tailshaft or the diff. I can't check it right a way, but it will be one of the first things I do some time soon. thanks again.
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From: DE
I had a similar problem with my '87, it turned out to be a broken carrier in the rear end. When I start rolling from a stop, it would clunk after it moved a little ways. It finally gave a loud bang as I was crossing the highway.
It was split in half.
Mark
It was split in half.
Mark
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From: Michigan
Mark, thanks, Yep... that's the exact sound and timing. Excuse me, but I gotta ask. Where does the piece you show bolt up, an fit. Is this what the pinion yoke slips into on the front of the diff housing, inside what we used to call the pig?
thanks,
Rich
thanks,
Rich
Last edited by rrzielin; Aug 14, 2005 at 08:31 AM. Reason: confirmimg
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From: Topsfield, MA
That is a picture of a Ford limited slip differential. The ring gear bolts to the side of it. That differential is in the middle of the axle. The axle shafts slide into each end of it, and power is transfered through it. You can go to Howstuffworks.com to get an idea of how a differential works.
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From: Columbia,S.C.
Yeah, mine was clunk'n and it ended up being an axel seal that went bad and allowed the axel to move around,the weird thing was that not very much fluid was leak'n out but it wore pits in the axel , i think the mud might have been hold'n the fluid in
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From: Michigan
Originally Posted by MustangGT221
That is a picture of a Ford limited slip differential. The ring gear bolts to the side of it. That differential is in the middle of the axle. The axle shafts slide into each end of it, and power is transfered through it. You can go to Howstuffworks.com to get an idea of how a differential works.