Vibration thru gas pedal

[krazyankee321]

Well, I am joining this group here. 13,500 miles on my 22 PB Platinum and the pedal vibration is probably my single greatest complaint of this truck besides all of the creaks and rattles. Happens in full-electric and engine on. I am one month away from my 1 year anniversary with this truck, and the gas pedal will be the reason I don’t buy an extended warranty and trade this thing in on another brand. I will say that everything else about this truck is amazing, and ownership over 11 months has been great.

I took a road trip down to Kentucky in the truck and had a coworker drive so I could sit in the back and knock out some work. I felt the “oscillating vibration” from the gas pedal in the floor in the back seat. My feet were buzzing after 5 hours sitting back there, behind the passenger seat. I typically feel it the worst between 50-60 mph. Might as well call cruise control a foot rest. Good news, we got nearly 27 mpg across a 5 hour drive. Love that.

Crawled under the truck after the road trip and noticed my axle boot on the driver side is leaking. I remember seeing a clear oily liquid on my garage floor back in March/April but thought nothing of it.

Just dropped the truck off at the dealer 4 hours ago to address the leaking axle boot and see if there is a correlation between that and the gas pedal vibration. Also addressing the rattling back glass. And my rattling glove box. And my driver side power running board that decided to stop working yesterday lol.

I’ll report back if the dealer finds anything.

Any update on this?

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[Rockman5159]

Anyone experiencing an intermittent vibration or light grinding feeling through the accelerator pedal? Seems to happen mostly at 1500+ RPMS. I thought it was because I have the adjustable pedals but I drove another 2021 with the adjustable pedals today and there was no vibration. There are several old threads on this issue and the theorys have been the adjustable pedals resonating with the engine or various issues with the exhaust being loose, unbalanced drive shaft, transmission issues. Etc. One thread on this issue from years past was 46 pages long but I dont see where anyone ever came up with a definite cause or remedy. I have an appointment with my dealer next week to look at this but they say they have never heard of this. Anyone else with this issue? Thanks

I definately have the same problem. My truck is RCSB and the vibration has a resonating roar around 1500 to 2000 rpms. The speed doesnt seem to affect it but mine does it in any gear around the same rpm. It also seems to be worse in hotter weather.I also have a scheduled appt with dealer. If you get yours sloved first,please let me know

 

[the_swd]

Vibrations


Picked up a ’23 XLT 2.7 beginning of June; vehicle was a dealer demo with only 700 miles on it. Test drove fine, although the issue was probably there; just didn’t notice it due to the crappy roads Michigan is known for, but nonetheless, I’ve been tracking down 3 vibrations. First, steering wheel, second gas pedal and third dead pedal (footrest).





Looks like the dealer performed a balance/alignment on my truck the day I took delivery (without telling me), and it appears they did a poor job as I took it to discount tire and had them balance the tires — lo and behold, one of the tires was off. That fixed my steering wheel vibration issue.





Next up was the gas pedal. I’ll be forthright in saying that I have not had the excessive vibrations some have mentioned, but there was a very noticeable, almost random ‘grinding’ sensation in the gas pedal, at nearly any speed, but 40-45 and 70 being the ‘sweet spot’ in reproducing it; smooth asphalt roads flared up the problem more than anything too. In any event, I was curious if maybe the 2.7 is sensitive to fuel and thus running rougher, thus causing vibrations, so while on a family road trip, I filled up with mid-grade 89 octane. To my surprise, it helped a bit, and makes sense. The 2.7 definitely runs a bit smoother with 89 over 87, so therefore less vibrations overall, but the problem still persisted, just less intense. When I got back from my road trip, I was fixated on the grinding sensation. After reading another post about bolts falling out of the steering column, I was inspired to check to see if the gas pedal was tightened properly. To my surprise, the bolt wasn’t loose, but was not even hand tight, which to me can easily explain the light grinding sensation I was feeling. I hand tightened it (I have no idea what it’s spec’d for) took it for a test drive (surface roads only, no express way) and I would say the sensation is 95% gone; what a relief. Phew.





Now, it’s time to address the dead pedal (foot rest) area, which still gets random sensations at times. If I keep my foot on the floorboard, it’s smooth as silk; it’s just on the footrest area. The assembly under the footrest is literally a piece of styrofoam (really, Ford?) and not much else. I suspect that, plus the Husky liners that have a small gap between the foot rest and the liner, combined with the stiffness of aluminum body may be the culprit here. I’m currently thinking of ways to deal with that.





But, at the end of the day I do have to wonder if I’m being overly picky about this truck. My previous truck was a Silverado 3.0L Duramax which had the smoothest powertrain I’ve ever ridden. My lease was up, buying didn’t seem like a great deal given the service issues I had with it. I didn’t like the 2022 refreshes or the post-Covid price points, so I decided to give Ford a try this time, which was still less truck for more money. I was hoping at least though that Ford had their sh*t together better than GM, but maybe not if the Dearborn plant is shipping trucks with loose gas pedal assemblies and their dealers can’t perform basic tire balances…

 

[krazyankee321]

@krazyankee321 funny you just asked - I was just re-reading through this thread and some others and was ready to make a follow up post.

I made an appointment at my local dealer and dropped it off the minute they opened in the morning. They had my truck an entire day (and overnight) and I had it back by the afternoon the next day. I’d say they fixed 50% of my issues within 24 hours, so I guess that’s kinda good?

Anyway, here’s what my paperwork said:

1. CHECK AND ADVISE VIBRATION IN THE GAS PEDAL, BETW 50-60 MPH, IN FLOOR DRIVERS SIDE AND IN STEERING WHEEL, JUST WHEN DRIVING, EVEN WHEN IT GOES INTO FULL ELECTRIC MODE, NOT TIED TO THE ENGINE. FEELS IT OSCILLATING OR REVVING NOISE, GRIND FEEL, SOMETHING NOT ENGAGING. C/S DRIVER AXLE BOOT IS LEAKING.

CHECK AND ADVISE VIBRATION IN THE GAS PEDAL, BETW 50-60 MPH, IN FLOOR DRIVERS SIDE AND IN STEERING WHEEL, JUST WHEN DRIVING, EVEN WHEN IT GOES INTO FU ROAD TESTED, VERIFIED. CHECK TSB SSM, FOUND TSB 22-2224. FOUND NEC TO REPROGRAM THE PCM AND ANY OTHER MODULES REQUIRED BY THE SOFTWARE UPDATE AND SERVICE PROCEDURE. CLEAR CODES, POST ROAD TESTED, PASSED. CC 04 BP RECAL ROAD TESTED, VERIFIED.

2. CHECK AND ADVISE RATTLE BEHIND THE GLOVE BOX, NOTICE WHEN ITS ABOUT AT 25 MPH, LIKE SOMETHING SQUEAKING. PLASTIC ON PLASTIC SOUND. LIKE TENSIONER OR GLOVE BOX SPRING. NON ROTATIONAL NOISE - WIRELESS ELECTRONIC CHASSIS EARS -
ROAD TESTED VEHICLE, VERIFIED CUSTOMER CONCERN. CHECK TSB SSM, NONE APPLY. REMOVED GLOVE BOX IN ATTEMPT TO ISOLATE, ROAD TEST, CONCERN STILL PRESENT. REMOVED SURROUNDING DASH TRIM AND SCUFF PLATE, ROAD TESTED, NOISE STILL PRESENT. HOOK UP CHASSIS EARS, ABLE TO ISOLATE NOISE TO BC MOUNTING BRACKET, TORQUED TO SPEC AND POST ROAD TESTED, OPERATING PROPERLY AT THIS TIME.

3. CHECK AND ADVISE BACK GLASS RATTLES, POSSIBLE TSB, WHEN PLAYING MUSIC CAN HEAR RATTLE FROM THE GLASS. AT ANY AND ALL VOLUMES, LIKE THE BASS RATTLES THE WINDOW.

VERIFY CONCERN, CHECK OASIS, FOUND TSB 22-2349. FOUND NEC TO INSTALL THE REAR WINDOW SERVICE KIT FOLLOWING THE SERVICE PROCEDURE (DO NOT USE WITH ANY OTHER LABOR OPERATIONS) PER TSB, RECHECK, PASSED.

4. C/S DRIVERS SIDE RUNNING BOARD STOPPED WORKING, PREVIOUSLY THEY WOULD HERE A SQUEAK OR SQUEAL WHEN OPERATING, FOR COUPLE WEEKS, THEN WENT AWAY. AND THEN STOPPED, FEATURE IS CURRENTLY OFF.

VERIFIED INOP DRIVER RUNNING BOARD. CHECK TSB SSM, NONE APPLY. CLEANED DIRT FROM RUNNING BOARD HINGES/MOTORS, APPLIED LUBE AND RETEST, PASSED.

5. CHECK AND ADVISE CUSTOMER STATES FRONT RIGHT AXLE BOOT IS LEAKING
LIFT AND INSPECTED, NO LEAK EVIDENT, FOUND MINOR SEEPAGE FROM FRONT DRIVER SIDE AXLE SEAL. CHECK AXLE FLUID LEVEL, WITHIN SPEC. NO PROBLEM FOUND AT THIS TIME.

Referencing (1) above, I noticed immediately after picking up the truck that the transition from EV-ICE was much smoother. If anything, the truck was shifting better than before. I had thought this was fixed, but after an 8-hour round trip up north and 1,000 miles since getting it back from the dealer, I’m still feeling the pedal vibration, but a different vibration. I’d call it 50/50 fix. But again, I’m feeling the oscillating-grinding sensation in the pedal even in EV mode with engine off. Because I’m seeing this issue across multiple trims (in these forums), it has to be a common component across all vehicles that’s hiding in plain sight. Removed the engine cover and flappy fiber board underneath and I swear that helped a bit. But I have not thought about what I want to do next...

As for the rattle behind the glove box (2), I was very impressed that they were able to isolate what I was hearing behind the dash so quickly….BUT the glove box still rattled. I ended up taking apart the entire dash myself to remove the glove box to see what I was hearing. Turns out, it’s the decorative trim piece rattling against the plastic “door” it’s fastened to. I took that apart, put 3M tape between the two pieces, and voila! Fixed! I’d say the dealer got 50% of the rattle fixed, I got the other 50%. I’ve posted photos below of what I’m talking about. It does suck that you have to take the dash apart all the way over to the trim piece around the IPC on the driver side just to remove the glove box and hold it in your hands...

For the rear window rattle (3), they did apply that TSB and I noticed they put foam around the cable that pops up when you open your rear sliding window. However, I still have rattles. It’s sounding like the cable that opens the rear sliding window is rattling against the bottom of the window just behind the rear bench headrest. Gonna order one of those rear seat back “hooks” so I can pull it down and inspect further. So again, I think this is 50% fixed.

The driver side running board (4) has been working fine since, and the tech suggested lubing with white lithium grease every once in a while. Also told me to make sure the motor is cleaned off too. I have been spending some time this summer on dirt roads. So 100% fixed in my book.

And finally, I had the tech look at the photo below (5) that I took a couple months ago. I had them verify the fluid level of the t-case and they said all good. They told me that minor seepage is normal and DID offer to fix it for me, but the new one would have slight seepage as well. I wasn’t sure on that, so I told them to “humor me” and check the fluid level. Apparently all is well. (Edit - I have not seen any seepage in 1000 miles)

Hope that helps some of you!

Thanks for the update! I have had differential issues and have been told that 2022 models had poor quality control on the pinion gears. I have had the front diff replaced and and entire new rear end. I took it to by friends shop last week and we put the truck in the air and ran it in 2WD and 4A. I can hear and feel grinding from the front diff again so I took a small oil sample and found some metal bits. I can feel a "crunchy" sensation in the pedal and steering wheel so it will be going back to get inspected when some warranty work gets done next week (rear window and a minor loose trim piece). I'm going to push they replace the whole front end and hopefully get rid of this problem once and for all. Might be worth a minute to pull some fluid from the front diff on your truck. 22 Powerboost here. Good luck!

 

[Rockman5159]

Anyone experiencing an intermittent vibration or light grinding feeling through the accelerator pedal? Seems to happen mostly at 1500+ RPMS. I thought it was because I have the adjustable pedals but I drove another 2021 with the adjustable pedals today and there was no vibration. There are several old threads on this issue and the theorys have been the adjustable pedals resonating with the engine or various issues with the exhaust being loose, unbalanced drive shaft, transmission issues. Etc. One thread on this issue from years past was 46 pages long but I dont see where anyone ever came up with a definite cause or remedy. I have an appointment with my dealer next week to look at this but they say they have never heard of this. Anyone else with this issue? Thanks

My 2021 has a resonating roar/vibration at 1200 to 1500 rpms in any gear.Anything above or below it doesnt do it. It doesnt do it in park or neutral..In my mind it would have to be and engine or transmission mount OR a bearing in the trans maybe. Ive got a scheduled appt at dealer next week. we'll see how that goes. If you get a resolution before I do please let me know.

 

[ShakeAndBake1199]

I have a 2021 Limited Hybrid Powerboost, the vibration is not just through the pedal. At times my cell phone will come off magnetic holder. 1500 rpm in 9th or 10th gear, slight acceleration or gradual incline. Been to two dealers now, first one replaced driveshaft and U joints. Next one shimmed pinion. The vibration is magnified when pulling anything, even an empty trailer with only 50lbs tongue weight. If you kick it down and have it shift to 8th gear it goes away, today I manually shifted down to 8th and of course it went away. It's like back in the day when we were all driving standards and forgot to downshift. Sickening for the cost of this truck, 3 previous Lariat's none had this symptom and 2 of them had the 10 speed transmission. 30,000km on it now.

 

[21F150Limited0702]

21’ Tremor 9k miles- adjustable pedals and torsen diff here. I experience the pedal vibration significantly at highway speeds (55-75)and intermittently at speeds below now for the past 3-4k miles. Very frustrating to say the least.

Would very much appreciate are fix here…

Any luck resolving this.
21 Limited Powerboost that has the gas pedal vibration from 50-65mph. I have tried new tires, wheel balancing, alignment and it's still there.
Anyone tried driveshaft balancing, rear or front diff checks? It's definitely correlated with rotational components? Makes me disappointed driving my truck and don't enjoy it like I should. It's such a great looking truck but the experience sucks.

 

[scott011422]

Non that I know of.

The interesting thing about my vibration is it seems to be worse under load. Like it will be loud up a hill, then as you crest the hill noise and vibration are much less. Also, ss soon as I shift into neutral when under load, the sound and vibration is greatly diminished, Still there, But much less. Still doesn't matter if its under ICE or electric. Kinda has me thinking of either some gears wearing funny or these tires wearing funny.

 

[Area_51]

This seems to be the thread on the "buzzing/vibrating gas pedal" matter. So much so, in fact, that I joined this forum nearly exclusively to participate in the discussion and problem-solving going on in this thread.

Picked up a 2023 F150 3.5L Eco XLT FX4 about a month ago. Fell in love with the truck online, was out of town on a business trip and decided to stop by the dealership. Dealer allowed me to take the truck overnight and bring it back the next day, which for me was a 120-mile round trip. I swear to you, absolutely no peddle vibration was observed or felt during the whole test drive.

The next day, I sign the papers, they detail the truck, and on the 60 mile trip back from the dealer... the pedal is now "buzzing" under load. Now, I am a very critical and suspicious person — I google it immediately. Find quite a few threads on the subject. It's a real thing, not just in my head! I have driven many different vehicles over the last 15 years and I have NEVER felt something like what I feel in the F150's gas pedal, not even in the lowered Miata or the "big tires Wrangler" I've owned.

Since purchase, I've driven the truck normally and put about 1k miles on it, still has the pedal vibration intermittently, which manifests in different intensities depending on seemingly random conditions.

Now here's my theory — I'm thinking that something was changed between my 120-mile test drive and when I left the dealer's lot. I'm wondering if it was right before I left, while they were detailing it. The truck also seems to shift waaaaaaay too early, like "45mph in 8th gear" early. Is there any way to tell when the latest ECU flash/software update was done to the truck?

Anywho, very glad to join the conversation here — I feel that, with this many people all directing our brainpower to figuring this out, we may just have an opportunity to fix this.

 

[WhiteLightningnshitshadow]

Wanted to provide a quick update. 2022 2.7 ccsb. I tried to get groove ford to perform a pcm update via tsb 222224, but they refused as the tsb covered builds up to May 2022, whereas my truck was June 2022.

So still have an oscillating vibration between 50-60ish. I need to test to see if it happens in 7th, but I've noticed its in 8-10th gear. I have tried different octane gas, but normally run 91 anyway.

Being as it only happens under load AND the springs are rather infamously diminutive back there, I have a theory that we may be getting some axle wrap that is throwing the angled off under any sort of load. Not sure why it wouldnt show in speeds below 50 though when wrap is presumably more severe while accelerating from lower speeds. Also, with rear blocks removed, I'm less likely to be severely impacted by torque causing wrap.

Calling Ford engineers to put a vibration sensor on the truck to narrow down the issue and let me know if this is causing permanent damage. I can live with it as long as wear isn't occurring.

Other theory still stands that this could be something engine management related. I really don't think it's trans related. My trans has been pretty great to be frank except when shifting for the first time each day where it lurches from 1st to 3rd.

 

[HammaMan]

...

Find a way to attach some type of fiberglass stick of a sorts to the axle / spring area with a camera watching it trying to replicate it? If it is driveline angle it should start flopping a bit. Given your listed occupation, that should trigger something for ya.

 

[Area_51]

Wanted to provide a quick update. 2022 2.7 ccsb. I tried to get groove ford to perform a pcm update via tsb 222224, but they refused as the tsb covered builds up to May 2022, whereas my truck was June 2022.

So still have an oscillating vibration between 50-60ish. I need to test to see if it happens in 7th, but I've noticed its in 8-10th gear. I have tried different octane gas, but normally run 91 anyway.

Being as it only happens under load AND the springs are rather infamously diminutive back there, I have a theory that we may be getting some axle wrap that is throwing the angled off under any sort of load. Not sure why it wouldnt show in speeds below 50 though when wrap is presumably more severe while accelerating from lower speeds. Also, with rear blocks removed, I'm less likely to be severely impacted by torque causing wrap.

Calling Ford engineers to put a vibration sensor on the truck to narrow down the issue and let me know if this is causing permanent damage. I can live with it as long as wear isn't occurring.

Other theory still stands that this could be something engine management related. I really don't think it's trans related. My trans has been pretty great to be frank except when shifting for the first time each day where it lurches from 1st to 3rd.

We're certainly experiencing two different vibrations. I've seen the "under load" comments (me) and the "50-60mph" comments. Wonder if these two issues are related somehow or completely separate.

I will report this, however — drove my truck in the early morning this week and it was about 36°F outside — absolutely no gas pedal vibration. Came back later in the day intermittently, but seems to be getting better with time.

 

[WhiteLightningnshitshadow]

We're certainly experiencing two different vibrations. I've seen the "under load" comments (me) and the "50-60mph" comments. Wonder if these two issues are related somehow or completely separate.

I will report this, however — drove my truck in the early morning this week and it was about 36°F outside — absolutely no gas pedal vibration. Came back later in the day intermittently, but seems to be getting better with time.

Yeah there's definitely some very different issues being discussed in this thread. If it disappears in cold weather, it could be a tolerances issue.

I finally found a good road last night and did some further testing. I noticed the 50-60ish vibrations actually were present in 7th gear too and don't seem as dependent on the engine load or rpms as originally thought. Its most noticeable at tip in, but thats just because there's less interference. So now I'm thinking this is actually more likely driveline related. Bear in mind my flat rear blocks are removed. I'll be putting the blocks back in today to test, but ideally would have a light shim to work with. The reason I didn't think it was pinion angle related was removing the flat blocks doesn't change angle, there is no vibration at any speed while off throttle (unlike previous pinion angle issues I've experienced) and removing blocks means less torque leverage on these frankly weak springs.

Can anyone recommended a 1 degree shim? I saw the belltech offering, but I really don't think that fits our trucks based on the pics. It seems like they're the only game for 1 degree shims.

Edit: reinstalled blocks and its not perfect, but its definitely a little better. Ordered some 1 degree belltech shims and hopefully they fit the holes. Kind of annoying at this point.

 

[BUDXR7]

Haven’t read thru this thread in detail but I also notice this on my brand new powerboost. It had this pedal vibration 55-65 mph since driving off the lot. I assumed it was the electric assist intermittently kicking in at highway speeds. Is that not a theory? It did not seem to occur above 70, assuming the electric assist phases out at higher speeds. Now I’m concerned my truck with 300 miles on it already needs warranty service?

 

[Snakebitten]

Uhoh.
Now you might be letting a "what if" steal your joy?

At least let the truck "breakin" for a couple thousand miles?
Also, what gear are you in 55-60, as you mentioned?

Try the truck in Sport Mode (just drive it normal. You don't HAVE to drive sporty just because you chose a different shift strategy) Now, is 55-60 the same feel? Because the only real difference is that you are in a different gear ratio and rpm at the same speed.

Just curious.

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