Driveshaft
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Mountain Pass
Joined: Feb 2018
Posts: 113
Likes: 1
Driveshaft
2002 v10 Ex new to me. Has a vibration at speed >60 mph
I am about to drop the rear driveshaft to check it out but before i do I wanted to ask a couple questions. It looks like the previous owner replaced the ujoints. I am wondering if he reassembled the shaft incorrectly? could it be out of phase? Is that possible or is the slip keyed so it can be assembled one way?
This shaft has 3 ujoints. 2 near the tranny and 1 near the diff. The slip is near the diff. is the shaft in correctly? I guess I would have thought the single and the slip would be near the tranny.
I am about to drop the rear driveshaft to check it out but before i do I wanted to ask a couple questions. It looks like the previous owner replaced the ujoints. I am wondering if he reassembled the shaft incorrectly? could it be out of phase? Is that possible or is the slip keyed so it can be assembled one way?
This shaft has 3 ujoints. 2 near the tranny and 1 near the diff. The slip is near the diff. is the shaft in correctly? I guess I would have thought the single and the slip would be near the tranny.
Laughing Gas
Joined: Dec 2017
Posts: 1,002
Likes: 641
From: Miami, Fl
My 04 V10 has the 1 piece driveshaft. I marked the clocking of the yolks and changed the U joints. After that, I had a slight vibration at higher speeds. On my home from a 300 mile each direction trip while pulling my trailer I had a whine in the rear end. Seems my shaft had put too much side load on the pinion bearings and started a failure of the rear diff.
My thought is that I might have bent one or more of the U joint ears on the drive shaft while pressing the old joints out which put the shaft slightly out of balance.
I ended up purchasing another drive shaft and an entire rear axle assembly but with the 4.30 gear instead of the 3.73 only to get it and find it was an open diff when it was advertised as a limited slip. I paid a local to pull the limited slip out of the old diff and put it in the 4.30 diff.
Anyway, it might be worth your time to find a drive line shop that can check your drive shaft for any balance issues after you have replaced the U joints. Wish I had.
My thought is that I might have bent one or more of the U joint ears on the drive shaft while pressing the old joints out which put the shaft slightly out of balance.
I ended up purchasing another drive shaft and an entire rear axle assembly but with the 4.30 gear instead of the 3.73 only to get it and find it was an open diff when it was advertised as a limited slip. I paid a local to pull the limited slip out of the old diff and put it in the 4.30 diff.
Anyway, it might be worth your time to find a drive line shop that can check your drive shaft for any balance issues after you have replaced the U joints. Wish I had.
Laughing Gas
Joined: Oct 2017
Posts: 1,143
Likes: 13
From: ND
Have it rebalanced. The shop doing that can also tell you if anything else is wrong. Recently just went through this and in my case it was just out of balance
there are some cool vibration analysis apps for phones that can tell you the frequency of the vibration too, in my case the frequency confirmed the theory about driveshaft
there are some cool vibration analysis apps for phones that can tell you the frequency of the vibration too, in my case the frequency confirmed the theory about driveshaft
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