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22 F-150 Tire Vibration

Jayet96

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What tires do you have?

I’m going out o drive another one on the lot to see if it’s specific to my truck and/or non stock tires.
Mine came with Michelin. I went straight to the tire shop and put on 275/70 18 Cooper Discoverer AT3. They were E load rated and I was not happy with them. I just installed General Grabber AT 275/70 18 that are standard load rated and road force balanced. I also have a 2” front level.
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richardrocks

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Update: dealer can’t really reproduce the pedal grinding so they are going to keep it and drive it again tomorrow. I’m guessing same story. I’m going to have to just do the homemade solution of adding padding between the pedal and firewall 😬

Also! I test drove a brand new XLT PB with 10 miles on it. Steering wheel and seat produced similarly annoying high frequency vibration, but more livable with the stock tires. I can’t get by on stock — I had zero traction in the snow, so I might have to adjust my expectations for the ride characteristics exacerbated by more aggressive tires unless this other new vehicle has an issue, too.

I felt a tiny, almost imperceptible vibration in the pedal but no grinding, but it had the non adjustable pedal if that makes a difference.

They are trying! But I guess I’m sensitive in a way that makes me not love the ride quality. Not sure why my Wrangler with MT tires doesn’t annoy me as much 🤔
 
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I bought the klein angle finder for $30.00 took some measurements after watching the above video several times. My driveshaft angles were off by a bit. I loosen the two bolts holding the hanger bearing to the the driveshaft drop some until the numbers were closer. I added some shims that filled the gap between the hanger bearing and the body and tightened the bolts. Took it for a test drive, it is almost completely vibration free including the pedal. I did add some more shims trying to get the numbers closer. So I’ll be playing around with that.
 

richardrocks

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I bought the klein angle finder for $30.00 took some measurements after watching the above video several times. My driveshaft angles were off by a bit. I loosen the two bolts holding the hanger bearing to the the driveshaft drop some until the numbers were closer. I added some shims that filled the gap between the hanger bearing and the body and tightened the bolts. Took it for a test drive, it is almost completely vibration free including the pedal. I did add some more shims trying to get the numbers closer. So I’ll be playing around with that.
Excellent. I’ll share that with the tech. I appreciate it!
 

richardrocks

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I’ve been reading on the pedal vibration. A lot of people are using special washers and the pad behind the gas pedal. There are three 1/2 bolts on the gas pedal side. Once remove the pedal can be moved. I traced the shape cut and punch three holes and bolted it back to the fire wall. The factory bolts worked just fine.
https://www.amazon.com/dp/B019NZOG0M?psc=1&ref=ppx_yo2ov_dt_b_product_details
I bought this stuff and it’s an improvement. I still feel a bit of the intermittent grinding sensation, but overall, it’s livable I think. I also placed some under the dead pedal because there was a bit of vibration there as well.
 

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I bought this stuff and it’s an improvement. I still feel a bit of the intermittent grinding sensation, but overall, it’s livable I think. I also placed some under the dead pedal because there was a bit of vibration there as well.
What I’ve learned so far is there is a reason why the pedal is pulsating. We shimmed my rear axle last night got the drive line pretty darn close. As a result the pedal vibration and driveline vibration is 98% gone. Still feel a slight buzzing almost like knobby tires.
 

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So Far: balanced tires, replaced tires, road forced balance again, adjusted something in the steering that sucks its very loose now. 2 more times, remove balance and rotate tires. Found a few things off kilter - muffler not aligned properly, loose air box. Did the "vibration" sensor test which they say cam back within limits. Took apart rear axle, which ended up just being an inspection they did not find anything wrong. Have taken drives with service managers from 3 different dealers and each one of them says I agree with you something is not right but none can figure out what.
Any info on the "loose steering"? Long story short, my truck was super composed and steering wheel would never move going over bumps. I got a tire rotate and balance one day and ever since then my steering has been very loose, or maybe sensitive, and will kick left or right depending on the road conditions. Any feedback would be appreciated, it's quite annoying.
 

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Any info on the "loose steering"? Long story short, my truck was super composed and steering wheel would never move going over bumps. I got a tire rotate and balance one day and ever since then my steering has been very loose, or maybe sensitive, and will kick left or right depending on the road conditions. Any feedback would be appreciated, it's quite annoying.
So far after the last go-around I have been pretty rock solid or as close as you can get. I'm attributing the loose steering to the tires. Since 3rd set and new diff no unusual vibration or wandering, I actually enjoy driving my truck.
 

richardrocks

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What I’ve learned so far is there is a reason why the pedal is pulsating. We shimmed my rear axle last night got the drive line pretty darn close. As a result the pedal vibration and driveline vibration is 98% gone. Still feel a slight buzzing almost like knobby tires.
This is great! So glad you were able to resolve it.
Thinking aloud here: what are the chances of ever convincing the dealer to take my word for it (since they’ll never “reproduce it”) that there’s pulsing in my pedal, even with the padding I’ve wedged between the firewall and pedal, and they’ll go ahead and examine / correct my angles? 🤔 or is becoming a layman mechanic just part of the Ford ownership experience?

here’s the piece of $54 vibration absorbing material recommended on this thread:

Ford F-150 22 F-150 Tire Vibration IMG_0132
 
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thebigdu

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This is great! So glad you were able to resolve it.
Thinking aloud here: what are the chances of ever convincing the dealer to take my word for it (since they’ll never “reproduce it”) that there’s pulsing in my pedal, even with the padding I’ve wedged between the firewall and pedal, and they’ll go ahead and examine / correct my angles? 🤔 or is becoming a layman mechanic just part of the Ford ownership experience?

here’s the piece of $54 vibration absorbing material recommended on this thread:

IMG_0132.jpeg
 

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NB64

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This is great! So glad you were able to resolve it.
Thinking aloud here: what are the chances of ever convincing the dealer to take my word for it (since they’ll never “reproduce it”) that there’s pulsing in my pedal, even with the padding I’ve wedged between the firewall and pedal, and they’ll go ahead and examine / correct my angles? 🤔 or is becoming a layman mechanic just part of the Ford ownership experience?

here’s the piece of $54 vibration absorbing material recommended on this thread:

IMG_0132.jpeg
From all the research found on this subject there seems to be the three causes unbalanced driveshaft, pinion angle and the rear differential. Mine was probably always the pinion angle. The first driveshaft was probably good, the second driveshaft got lost for a month and probably got banged up. The third one arrived in 3 days and tested good. When you bring it ask the service manage that you’ve read that a number of trucks on the forums had issues with the pinion angle being off. Ask him to test it. It takes like ten minutes . The Rangers have a tsb and a fix for pinion angles being off.
 

Jayet96

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This is great! So glad you were able to resolve it.
Thinking aloud here: what are the chances of ever convincing the dealer to take my word for it (since they’ll never “reproduce it”) that there’s pulsing in my pedal, even with the padding I’ve wedged between the firewall and pedal, and they’ll go ahead and examine / correct my angles? 🤔 or is becoming a layman mechanic just part of the Ford ownership experience?

here’s the piece of $54 vibration absorbing material recommended on this thread:

IMG_0132.jpeg

[/
From all the research found on this subject there seems to be the three causes unbalanced driveshaft, pinion angle and the rear differential. Mine was probably always the pinion angle. The first driveshaft was probably good, the second driveshaft got lost for a month and probably got banged up. The third one arrived in 3 days and tested good. When you bring it ask the service manage that you’ve read that a number of trucks on the forums had issues with the pinion angle being off. Ask him to test it. It takes like ten minutes . The Rangers have a tsb and a fix for pinion angles being off.
would the pinion angle cause a fine vibration in the steering wheel? Mine has a fine vibration, not noticeable to the eye but you can feel it. Sounds similar to the pedal vibration others feel which I do feel slightly at times.
 

richardrocks

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From all the research found on this subject there seems to be the three causes unbalanced driveshaft, pinion angle and the rear differential. Mine was probably always the pinion angle. The first driveshaft was probably good, the second driveshaft got lost for a month and probably got banged up. The third one arrived in 3 days and tested good. When you bring it ask the service manage that you’ve read that a number of trucks on the forums had issues with the pinion angle being off. Ask him to test it. It takes like ten minutes . The Rangers have a tsb and a fix for pinion angles being off.
What’s annoying is that there is extensive discussion going back several years — how is there not a TSB or internal guidance for the F150? It’s been going on long enough that when someone describes this issue, they should just be like, we’ve got this. Failure to duplicate, gaslighting, etc — not a great strategy especially when ranking near the bottom of reliability at the moment.

Appreciate your insights, and hoping for a resolution with mine but I’m not counting on it.
 
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NB64

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What’s annoying is that there is extensive discussion going back several years — how is there not a TSB or internal guidance for the F150? It’s been going on long enough that when someone describes this issue, they should just be like, we’ve got this. Failure to duplicate, gaslighting, etc — not a great strategy especially when ranking near the bottom of reliability at the moment.

Appreciate your insights, and hoping for a resolution with mine but I’m not counting on it.
I was looking for some sort of specialist in drive trains, like an engineer. This way the problem could be diagnosed and then disputed with ford. I’ll probably bring my truck back to the shop to have the fine tune the pinion Angle, We got it close.
 

richardrocks

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What I’ve learned so far is there is a reason why the pedal is pulsating. We shimmed my rear axle last night got the drive line pretty darn close. As a result the pedal vibration and driveline vibration is 98% gone. Still feel a slight buzzing almost like knobby tires.
What would account for the following: this morning’s 10 mile drive to trailhead, pedal has the faint constant vibration but little to no pulsating / grinding. Drive home on same stretch, it’s present. If it’s driveshaft, pinion angles, or differentials, is it possible to be hit or miss and what would account for that? Fluids warmed up? Road condition jostling things around?

When corporate follows up, I’m going to request that they use computerized vibration detection equipment. It’s ridiculous to rely on human perception — this is really verifiable. I’m literally banking on this, I can’t keep the truck long term with the pedal pulsing. Hoping for a positive outcome.
Ford F-150 22 F-150 Tire Vibration IMG_0184
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