TSB 20-2277 2019-2020 Ranger - Shudder/Vibration When Accelerating From A Stop

[rdgallo]

Look into driveshaft slip yoke or slip joint lubrication. There are ton of YouTube videos for the F-150 on it.

Thanks! I will check it out.

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[navsnipe]

Hi Folks,

I was wondering if maybe the Tremor driveshaft with the Rear CV joint might work for those cases where the shimming was ineffective. I think the rear axle companion flange is the same, but it is a guess on my part. Further research is needed to see if the Tremor and non Tremor driveshafts would swap out... Just a thought....

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

I've searched the Ford parts site under a Tremor vin number and the same driveshaft that is on the rest of the Rangers is shown. Do you have a part number for the CV rear driveshaft?

 

[P. A. Schilke]

I've searched the Ford parts site under a Tremor vin number and the same driveshaft that is on the rest of the Rangers is shown. Do you have a part number for the CV rear driveshaft?

Hi Dave,

I do not...I would see if Benny at Levittown Ford can shed some light on this...

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[MIBuckeye]

Hi Dave,

I do not...I would see if Benny at Levittown Ford can shed some light on this...

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

Not sure if this helps but this is on my Tremor. I can tell you though that just today i removed it and drove it around. Same shutter and vibrations. Shifting my wheels around with the spare seems to be making interesting differences though.

 

[navsnipe]

Not sure if this helps but this is on my Tremor. I can tell you though that just today i removed it and drove it around. Same shutter and vibrations. Shifting my wheels around with the spare seems to be making interesting differences though.

When you say you removed it, were you referring to the rear driveshaft?
Does your Tremor have a CV joint or universal joint at the end where it mates to the rear axle?

 

[P. A. Schilke]

Hi Chris,

Thank you for the part number. Now the trick is to get Ford to pay for a switch to this driveshaft on the cases where the TSB was unsuccessful...

LB3G 4K145 DC... We need to find a dealer that would try to use this driveshaft to resolve a customer complaint. Also...why did Tremor get a driveshaft with a rear CV joint? Got to be more expensive so something was up to warrant this change...but what??? Was the Tremor rear suspension full droop to Jounce beyond the operating angle of a U joint? Wish I knew the answer to this.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[MIBuckeye]

When you say you removed it, were you referring to the rear driveshaft?
Does your Tremor have a CV joint or universal joint at the end where it mates to the rear axle?

I removed the entire shaft from trans to pinion including center bearing. It has a CV joint at the rear.

 

[MIBuckeye]

Hi Chris,

Thank you for the part number. Now the trick is to get Ford to pay for a switch to this driveshaft on the cases where the TSB was unsuccessful...

LB3G 4K145 DC... We need to find a dealer that would try to use this driveshaft to resolve a customer complaint. Also...why did Tremor get a driveshaft with a rear CV joint? Got to be more expensive so something was up to warrant this change...but what??? Was the Tremor rear suspension full droop to Jounce beyond the operating angle of a U joint? Wish I knew the answer to this.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

Well, i can tell you that my dealer has one on order for this specific purpose. It is on backorder with no ETA.

 

[P. A. Schilke]

Well, i can tell you that my dealer has one on order for this specific purpose. It is on backorder with no ETA.

Sad!

 

[MIBuckeye]

Sad!

May be able to replace it with an aftermarket flex joint which interestingly appears to be the EXACT same one on my Tremor.

https://jeepsarelife.com/teraflex-1...7gm155FIyxSfvta38qJKx_FZyVKPRTERoC-MsQAvD_BwE

 

[navsnipe]

Hi Chris,

Thank you for the part number. Now the trick is to get Ford to pay for a switch to this driveshaft on the cases where the TSB was unsuccessful...

LB3G 4K145 DC... We need to find a dealer that would try to use this driveshaft to resolve a customer complaint. Also...why did Tremor get a driveshaft with a rear CV joint? Got to be more expensive so something was up to warrant this change...but what??? Was the Tremor rear suspension full droop to Jounce beyond the operating angle of a U joint? Wish I knew the answer to this.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

It would be nice if they would stop kicking this shudder problem down the road. They are going to lose another customer soon.

 

[kieefer]

I had this vib early on. (Before and after adding Eibach’s coil overs to level it.)
The dealer won’t do the TSB because of the lift.
Im at 24k miles and don’t have the vib that I noticed between 1500-2500 rpm when I first bought it.

I added a tune but still had it but not nearly as noticeable. My truck is very smooth now with the added miles. I did pick up a vib at 80mph but that was after a wheel rotation.
I can’t tell you specifically what changed but adding miles seemed to help.
I also did another thing recently by taking the main spring out of my GFB DV+ and I read something on here which involved turning on the power without starting. Mash the gas pedal down for a minute. Turn the power off, wait two minutes and start. WTF that does exactly I don’t know.

Ive always felt the vib was due to transmission programming and the computer hunting for the ideal shift point and failing, sport mode helped mine in the beginning.

Something else that bugs me was mentioned earlier. If you go bouncing off-road or load your truck down with a trailer that too changes the driveshaft angle. This angle is always changing isn’t it?
I’ll cut my rant off by saying the Tremor’s terraflex joint may be a good fix but it is sad Ford hasn’t addressed this with a recall.

 

[jamo147]

So I had TSB 20-2277 done and it fixed 80% of the shudder problem. I know that if I lower the rear ride height by 1”, the shudder goes away but they can’t do that without voiding my warranty. Any thoughts on if a 1.5” level at the front would effectively do the same thing as lowering the rear (driveline angle wise)? Also for those that don’t know, there’s an updated TSB 21-2136 for start up shudder but they said kit is the same.

 

[navsnipe]

So I had TSB 20-2277 done and it fixed 80% of the shudder problem. I know that if I lower the rear ride height by 1”, the shudder goes away but they can’t do that without voiding my warranty. Any thoughts on if a 1.5” level at the front would effectively do the same thing as lowering the rear (driveline angle wise)? Also for those that don’t know, there’s an updated TSB 21-2136 for start up shudder but they said kit is the same.

Were you able to get a copy of the new TSB document?
How would you lower the rear end by an inch? There is not that thickness of shims between the axle and leaf springs.

 

[jamo147]

Were you able to get a copy of the new TSB document?
How would you lower the rear end by an inch? There is not that thickness of shims between the axle and leaf springs.

Couldn’t find, seems too new. But that’s the updated TSB they mentioned on my invoice.

Not sure how to lower the rear… I did it by putting 500 lbs in the bed and that lowered rear by 1”… shudder disappeared. Dealer said the only way would be to reform springs but that would be an aftermarket thing and may void warranty too. That’s why I was thinking leveling… to potentially adjust pinion angle from front and give room for bigger tires?

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