GotHonks?

This maybe the answer your lookin for , its the whole article ....
Ford F-150 truck shaking at speeds greater than 25 mph? It is most likely an easy and cheap fix!
By FordGuy

Ford F150 brake repair diagnosis
If your Ford F150 truck shakes violently at highway speeds then you need to read this!


Yes, I am a Ford trained mechanic with years of experience under my belt. One strange complaint that several customers have had particularly with the Ford F150 trucks is that they somehow experience shaking that comes from the rear end at speeds above 20 mph.
Reportedly according to the customers that have experienced it is violent and causes them to have to pull over to the side of the road.

All that said it is a very violent and dangerous feeling when it occurs. But the strange thing is it does not occur every time they drive the vehicle. And the hard thing is to diagnose what’s wrong with it because when they bring it into the shop we don’t get to see what happens either. Somehow it never seems to occur when the mechanic or service technician is taking the vehicle out for a test drive.

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Finally we had an ad in a customer that knew the owner and so the service manager went with me on a long test drive of their Ford F-150 truck. Basically told me we are not coming back to the dealership until we experience what this person is complaining about because they’re a very important customer and a good friend of the car dealership owner.

I didn’t disagree because hey I’m getting paid to go out on a drive. Who wouldn’t rather do that than be working on cars. So we drove around and nothing happened. We drove it on the highway and on city streets. We took out time for lunch and then went back out driving it again. Finally as we’re on the highway doing about 60 miles an hour it occurred. The truck started shaking violently as if the rear-end had locked up.



This was actually a potentially very dangerous situation. Most customers that experience a violent shaking like this could actually lose control of their vehicle and cause a bad or fatal accident. We notice that as we slow down the shaking got less violent and then it stopped when we pulled over to the side of the road and turned off the vehicle and then started it again. It didn’t happen again all the way back to the dealership.

So he merely told the customer that they were cracked there was some violent shaking that one on but it was very intermittent. So we put up on the left and then we looked into the service data on the truck and found out there could be a problem with the emergency or parking brake. When I took apart the drum for the emergency or parking brake I found out that it was defective and fused.

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So I removed the entire rear drum and cables and installed new ones. Then we took it out for a test drive and nothing bad like violent shaking occurred. We gave the truck back to the customer and told them that if they experience any more problems to let us know immediately. After this they didn’t have any more problems or troubles with their truck. Apparently they just had a defective parking brake drum or unit and by replacing it along with its cables we were able to fix this problem of violent shaking in their Ford F-150 truck.

So if you are experiencing the same kind of violent shaking coming from your rear end on a Ford F-150 truck. Bring it into your car dealers service area and be sure and tell him that it’s most likely or potentially could be the rear parking brake drum seizing up or fusing. This is a potentially very dangerous problem so be sure and take it into your dealer as soon as possible to be fixed. Remember is always better to be safe than sorry.

snakebit95

The parking brake sounds like the problem. Prior to reading that post though, it was starting to sound like a driveshaft might be out of balance. I have experience with an out of balance driveshaft in the past, and it can cause serious vibes throughout the truck; especially at resonant frequencies. Let us know what fixed it. I'm curious to know.

Wanted33

What you have explained is not cab shake brother. Even with the cab shake issue, mine has never exibited the probelms you describe. You're right, something else is wrong. Take your service guy this thread, and let him read it through. It may help him, and your cause. Good luck.


[MENTION=179140]GotHonks?[/MENTION], thanks for that explanation. That could help Socio, and even me if I ever have that problem.

Socio

Just to be clear, it is not a "violent" shake. It's barely noticeable at times depending on the condition of the road. However, at 25 mph and 49 mph it's enough to shake my chubby cheeks (face). I'm taking it to my tire guy tomorrow and possibly the local Lincoln dealer. Depending on what they tell me, I'll contact Ford as the next step.


Thanks to everyone for your input and I am printing this thread to take with me.

jaconn02

Mine is off on my 2014, about 1.5 gallons. My 12 was spot on every time.

jaconn02

Wrong post sorry, can't seem to remove.

Socio

I just got off the phone with the Ford Corporation Rep. She stated that she was the Liaison between myself and the dealer. She said she was waiting to hear back from the dealer but that if they had diagnosed the problem and taken me for a ride in a similar vehicle. Then we could not move on to the next step and it would be considered a "normal characteristic" of the vehicle.
First the diagnosis consisted of checking the balance on the tires and then changing four tires. Second the "similar vehicle" felt like a tank and rode nothing like my truck. I told her I wanted to speak to her supervisor. I'm also taking it the Lincoln dealer to see what they say.
I just want to know if any of you out there have a 2014 F150 4x2 that feels like it is bouncing or shimmying at different speeds. Mine does it all the time but is most noticeable at 25, 30, 40 and 50. If it's a "normal Characteristic" then surely someone else feels it.

funmoneypit150

iTrader: (4)

Socio, did you ever get this resolved? I think I am experiencing the same thing. Mine comes and goes though. It only started after I began to use 4wd
this winter. And before anyone says you get more vibration in 4wd, it continues even when I put it back in 2wd. Just curious as to the resolution.

elfiero

To the OP: Here is something you can try yourself at home, and it might surprise you. Lower all 4 of your tires to about 25psi. do them all at once and with the key out of the ignition(so as not to upset the TPMS nanny). Now put a couple hundred pounds of items in the rear part of the bed of the truck. Now drive around for a while especially in the speed range where you have been having the problems. Then, report back and see if the problem changes in any way. This WILL NOT HURT your tires or the truck!! You might be surprised at the changes to your truck's "personality"

Socio

I'm still working this but having a hard time. Ford Inc told me to go to another dealer and test drive a vehicle exactly like mine. The problem is that I've been to 4 dealers so far and none have the same vehicle. Some have a 4x4 but not a 2x4 or one without eco-boost, etc. Sometimes I see people with a similar truck but they don't report any issues.


elfiero: When you say "for awhile" do you mean all day, several days or a few miles?


I'm going to try what you say and see what pops!! Thanks.