SKBORDERS

They are not lying to you intentionally. Most techs do not know how to analyze for vibrations let alone how to check drive shaft angles. I cannot tell you how many I have fixed, that there was "nothing wrong with it", just by checking angles. GM vans used to have this awful drone and the whole problem was drive shaft angles.

EdB

Those were his exact words. I asked him for the 3rd time to check the angles that i knew they where off. I had checked them numerous times and Trans output 4.5° downward , Driveshaft 5.8° downward and Pinion flange 1.7° upward. This gives me a 1.3° operating angle at Trans and 4.1° operating angle at pinion. Although he acknowledges vibration he says its normal. He stated he does not think the pinion angle has anything to do with the vibration. Again their not willing to check the angles and do not have the tool.

After driving truck for 10 miles or so and constant shimmy , quiver like sitting in a massage chair it literally give you a nauseated feeling. I know this sound a little much, but its the truth. It isn't a violent vibration, but more of a fast nonstop vibration in back of seat. I literally hate driving the truck. I love the look , get lots of compliments .... but hate driving it.

EdB

I think my misaligned angles are reason i am getting a whine / howl noise from the rear-end as well as vibration i am experiencing.

SKBORDERS

A 4 degree working angle is enough to cause a vibration in itself let alone a spread of nearly 3 degrees.

EdB

I have tried numerous times to have them check angles, but for some reason they won't. In a nice way i have covered all spec's and tolerances per Ford manuals to show they were out, but they will not check angles. I can't understand why they basically refuse.

SKBORDERS

At this point you really are down to 3 choices
Call Ford Customer support and try to get them to help (They will probably tell you to go to another Dealer)
Go to another Dealer and see if you can get them to do something
Do as some have done and fix it yourself. I know that it is not desirable, especially when it is under warranty, but some have chosen to do so and have posted the results themselves.

2016BoostedGreyGoose

iTrader: (1)

Gonna jump in here...2016 2wd super crew....vibration noted. Dealer noted same vibration on ride that I WENT on with the tech, road force balanced all 4 wheels stating they were all out of balance. Truck has 2600 miles on it, and the dealer said since I had it for months, and that low of miles, Ford wont replace the tires because it is likely flat spots from sitting. i drive my truck just not long distances...it does not just sit. I know its bs but didnt want to argue as I know or believe that the tires are NOT even the issue. I believe it is in fact excessive lateral run out of the drive shaft...so after getting truck back, and driving home...vibration is still there. *******s managed to scratch one of my wheels and try to get out of it, but not verify whether the DS is balanced or not. Going back to the dealership in the morning then it is off to a drive shaft specialist to correct Ford's cluster **** on this truck. LOVE my truck, bought tons of mods for it that are sitting in the garage, but wont...ahhh doesnt matter. Good to look at, sad to drive.

2016BoostedGreyGoose

iTrader: (1)

You know, you might get covered up with people asking for your help if you really can fix this. I for one would pay for your expertise...and im only in Florida. I would drive up or fly you down here...lol

doctorschlachter

Quote:
Originally Posted by doctorschlachter View Post
Pinion input should not be pointing up. I had the same problem as you. I convinced my dealer to install shims to rotate the pinion down 1.5 degree's. Wouldn't you know, vibration gone. This is what must be done to correct your problem.

Out of curiosity, when driving and feeling the vibes, can you drop it carefully into neutral? See if the vibes change, lessen or get worse. This will just confirm what your angles are out.

I understand this, but I think we are not communicating properly. When I say pinion I am referring to rear diff input. Trans output yoke points up, pinion input yoke points down to match trans output angle if possible (same except - and + angles)

OP - I had to measure mine myself, take pictures of my angle finder with degrees displayed, show them the math, and escalate with Ford until they installed a shim kit. I would have done it myself but that is what warranty is for. I basically did all the troubleshooting for them.

SKBORDERS

I won't argue with you. You must have a special application. Trucks typically have the engine/trans mounted with the sloped down toward the back (front of crankshaft higher than the output of the trans), pinion yoke points up toward the front. Cars are the reverse, engine/trans slopes down toward the front of the car (front of crankshaft is lower than the trans output shaft) and so does the pinion yoke.

Take a photo of your shim, Is the thick part toward the rear of the truck?

I didn't see the last part of your post.
When I say trans points down, I mean the trans output is lower than the front of the crankshaft. Pinion up is the yoke is higher than the center line of the pinion shaft where it meets the ring gear. so if you ran a laser from the yoke the line would go up toward the front of the truck, the trans would point down the rear of the truck so if you were looking at the drivers side of the truck with imaginary lines through the trans and pinion the lines would be up on the left and down on the right, ideally at the same angles.