Clunking when clutch is disengaged underload
#1
Clunking when clutch is disengaged underload
I have a 2001 F350 with the zf5 transmission that currently has this problem.
-When I am moving most of the time at a slower speed on a slight incline and I depress the clutch pedal to disengage the clutch to shift or stop there is a clunking from under the truck somewhere. Most of the time is in 1st 2nd or reverse the truck shifts and runs fine this is the only problem though.
Ive checked the carrier bearing (center support bearing) and there isn't much play. The u joints seem tight however they are originals with 162,000 miles on them.
Any ideas is greatly appreciated its a really embarrassing thing when it happens in public and not in my driveway
-When I am moving most of the time at a slower speed on a slight incline and I depress the clutch pedal to disengage the clutch to shift or stop there is a clunking from under the truck somewhere. Most of the time is in 1st 2nd or reverse the truck shifts and runs fine this is the only problem though.
Ive checked the carrier bearing (center support bearing) and there isn't much play. The u joints seem tight however they are originals with 162,000 miles on them.
Any ideas is greatly appreciated its a really embarrassing thing when it happens in public and not in my driveway
#3
#4
Are you talking about the noise if the tranny is under a slight amount of load and you remove it quickly?
It makes like a clack or a clunk?
All my standard vehicles do it, even front wheel drive. More so with my rear wheel drives because the drive shaft adds a tiny bit more rotational force and it also echos more, plus theres more components involved.
There are 3 things that can cause this:
1. Slip yoke splines might need a little grease.
2. Rear differential gears getting worn (will whine too while driving at highway speeds).
3. U-Joints getting worn.
All mine do it under slow driving/shifting and hills, backing, etc. It's just slop somewhere in the driveline.
My say, depending on how loud it is, it would be normal as things get worn and broken in.
I guess if it really that annoying, bring it by a shop that does driveline work, like a dedicated tranny shop or a shop you know that is good with driveline work. I'm pretty sure, they will tell you don't have a problem or else it wouldn't hurt to replace some parts, but even if you didn't it wouldn't really matter except for the noise.
It makes like a clack or a clunk?
All my standard vehicles do it, even front wheel drive. More so with my rear wheel drives because the drive shaft adds a tiny bit more rotational force and it also echos more, plus theres more components involved.
There are 3 things that can cause this:
1. Slip yoke splines might need a little grease.
2. Rear differential gears getting worn (will whine too while driving at highway speeds).
3. U-Joints getting worn.
All mine do it under slow driving/shifting and hills, backing, etc. It's just slop somewhere in the driveline.
My say, depending on how loud it is, it would be normal as things get worn and broken in.
I guess if it really that annoying, bring it by a shop that does driveline work, like a dedicated tranny shop or a shop you know that is good with driveline work. I'm pretty sure, they will tell you don't have a problem or else it wouldn't hurt to replace some parts, but even if you didn't it wouldn't really matter except for the noise.
Last edited by ManualF150; 08-01-2010 at 10:37 AM.
#5
Are you talking about the noise if the tranny is under a slight amount of load and you remove it quickly?
It makes like a clack or a clunk?
All my standard vehicles do it, even front wheel drive. More so with my rear wheel drives because the drive shaft adds a tiny bit more rotational force and it also echos more, plus theres more components involved.
There are 3 things that can cause this:
1. Slip yoke splines might need a little grease.
2. Rear differential gears getting worn (will whine too while driving at highway speeds).
3. U-Joints getting worn.
All mine do it under slow driving/shifting and hills, backing, etc. It's just slop somewhere in the driveline.
My say, depending on how loud it is, it would be normal as things get worn and broken in.
I guess if it really that annoying, bring it by a shop that does driveline work, like a dedicated tranny shop or a shop you know that is good with driveline work. I'm pretty sure, they will tell you don't have a problem or else it wouldn't hurt to replace some parts, but even if you didn't it wouldn't really matter except for the noise.
It makes like a clack or a clunk?
All my standard vehicles do it, even front wheel drive. More so with my rear wheel drives because the drive shaft adds a tiny bit more rotational force and it also echos more, plus theres more components involved.
There are 3 things that can cause this:
1. Slip yoke splines might need a little grease.
2. Rear differential gears getting worn (will whine too while driving at highway speeds).
3. U-Joints getting worn.
All mine do it under slow driving/shifting and hills, backing, etc. It's just slop somewhere in the driveline.
My say, depending on how loud it is, it would be normal as things get worn and broken in.
I guess if it really that annoying, bring it by a shop that does driveline work, like a dedicated tranny shop or a shop you know that is good with driveline work. I'm pretty sure, they will tell you don't have a problem or else it wouldn't hurt to replace some parts, but even if you didn't it wouldn't really matter except for the noise.
Ok thanks man I figured it is slop somewhere although its also noticeable between like the 2nd to 3rd shift and the 4th to 5th shift it makes a noticeable clunk when I release the clutch only every now and then though.
#6
On the flip side, I've got a Dakota that is standard and when you are doing something weird like on a slight incline or doing some slow manuever, and you are toying with the clutch, it will do it. It's louder on that thing than on my F150.
I can make it do it really loud on the F150 if I give it a lot of gas in 2nd while doing 5 mph and then pushing in on the clutch. That's because the engine is trying to put out a lot of torque and nothing is moving until I push the clutch in then the engine is more free to spin. But that's only when I'm in parking lots and stuff.
And yes, I can get all of them to clunk from 1st to 5th.
Yeah, I know it's a Jeep Page... but this guy says it perfect:
http://www.jeepforum.com/forum/f9/lo...-gears-680648/
"That is normal for high torque engines and high gear ratios. It is basically the clutch releasing the tension in the driveline."
Last edited by ManualF150; 08-01-2010 at 07:36 PM.
#7
I chuckled with that statement a v10 and 4.30 gears seems to match that perfectly.
Thanks for the link man I feel better knowing that it is no big deal.
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#8
Is it limited slip?
#9