Vibration in 5th gear
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Senior User
Joined: Dec 2005
Posts: 174
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From: Bryan, OH
Vibration in 5th gear
I've started to notice a vibration in my drive train. I notice it a little at 45-50 mph, but when I shift into 5th gear I notice it more. No matter how fast or slow I drive in 5th, I notice it. If I push in the clutch, the vibration stops.
I don't know if it's the trans, U-joint or an unbalanced drive shaft?
Any thoughts on this would be appreciated.
I don't know if it's the trans, U-joint or an unbalanced drive shaft?
Any thoughts on this would be appreciated.
Thread Starter
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Senior User
Joined: Dec 2005
Posts: 174
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From: Bryan, OH
Last July I was under the truck and noticed the weight block was missing from the drive shaft (fresh metal area). I don't know if this is related or not.
I don't know if now I'm just noticing it?
Maybe I could take the drive shaft out and have it checked for balance?
Cheers
I don't know if now I'm just noticing it?
Maybe I could take the drive shaft out and have it checked for balance?
Cheers
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
Likes: 4
From: 8600 ft in Colo
Yeah, I'd check that drive shaft, but by the symptoms you report, the vibration you're feeling isn't that. A drive shaft or u-joint will cause vibration at particular speeds regardless of what gear you're in, engine speed, or whether or not the clutch is dis-engaged.
Try getting it to vibrate, then push the clutch in while holding engine RPM the same as with the clutch out.
Try getting it to vibrate, then push the clutch in while holding engine RPM the same as with the clutch out.
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Senior User
Joined: Dec 2005
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From: Bryan, OH
I just tried this:
Try getting it to vibrate, then push the clutch in while holding engine RPM the same as with the clutch out.
It stopped as soon as I pushed in the clutch. I tried to keep the RPM's about the same. I even when I revved the engine, the vibration didn't come back.
It seemed to taper off when I got the truck up around 65 mph.
Thanks for the direction!!
I was just fearing the worst (trans)
Cheers to all ya!
Try getting it to vibrate, then push the clutch in while holding engine RPM the same as with the clutch out.
It stopped as soon as I pushed in the clutch. I tried to keep the RPM's about the same. I even when I revved the engine, the vibration didn't come back.
It seemed to taper off when I got the truck up around 65 mph.
Thanks for the direction!!
I was just fearing the worst (trans)
Cheers to all ya!
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
Likes: 4
From: 8600 ft in Colo
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Senior User
Joined: Dec 2005
Posts: 174
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From: Bryan, OH
I found the universal joint closest to the trans was loose when I push up and down.
I tried giving it more grease, but it wouldn't take it.
So I just took it to the shop.
Hopefully replacing this will help?
I tried giving it more grease, but it wouldn't take it.
So I just took it to the shop.
Hopefully replacing this will help?
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Thread Starter
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Senior User
Joined: Dec 2005
Posts: 174
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From: Bryan, OH
The problem is the yoke. The hole is slightly bigger than the U joint. So now I need to either replace the drive shaft (long part) or get one from a junk yard.
Does anyone know if other Ford trucks would have the same drive shaft?
There’s a 93 Ford 4x4 F-150 with a an automatic at the local yard with a drive shaft.
Does anyone know if this would work for my truck? I’m thinking of getting it and swapping the short end if I have to.
Cheers
Does anyone know if other Ford trucks would have the same drive shaft?
There’s a 93 Ford 4x4 F-150 with a an automatic at the local yard with a drive shaft.
Does anyone know if this would work for my truck? I’m thinking of getting it and swapping the short end if I have to.
Cheers
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