New vibration after replacing the guibo with u-joint

7623 Views 22 Replies 12 Participants Last post by carringb, Jan 10, 2021

extraj

Discussion Starter · Oct 12, 2020

Hi Folks,

I pored a bunch of the existing driveshaft threads and didn't see anything that seemed related...

I just had my van at the dealer to do the driveshaft recall. They installed a driveshaft with a u-joint and now we're getting a new vibration, most noticeable off-throttle and between 25-50MPH. It almost sounds like a helicopter is following.

Any ideas? My first thought is that maybe it's an imbalanced driveshaft, but that seems kinda improbable.

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Tcaschy021

· #9 · Oct 15, 2020

I have this same helicopter noise but at 45MPH. Doesnt matter if I'm coasting or on the gas. Its the same noise if you only have your rear windows down on a passenger car....like a noise buffering. 350 HD (dually) here.

Please report back after you bring it in.

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Tcaschy021

· #11 · Oct 16, 2020

extraj said:
Took it back to the dealer. The mechanic came for a drive with me, confirmed it. He put it up on the lift and said that he couldn't identify any issues so he's going to order a new driveshaft. I'm hoping that that fixes it -- if not I imagine I'm gonna be up a creek. Pleased with the dealer being willing to do this, though.

Thanks! Please continue to update this thread on your findings.

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Tcaschy021

· #16 · Oct 17, 2020

extraj said:
Hmmm. I'm glad to hear that you got it resolved!

Just to be clear for anyone who's reading this thread a year from now trying to figure out what to do: that's different than the issue that I'm having. My vibration is only related to road speed and not to load -- it doesn't matter whether you're on or off throttle.

This is what I have...road speed NOT load

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