I bought a 2014 FX4 EB and I HATE it!
11-26-2014, 08:31 AM
#251
Senior Member
A u-joint needs a small amount of misalignment to make the needle rollers turn and lubricate, else they slide and destroy themselves. Having said that though, you need to understand that the misalignment can only be in one plane, they will not stand misalignment in two planes at the same time.
If this shake is just due to you driving a truck that you think should ride like a caddy, when the marketing for this truck is it's towing capabilities, shame on you for wasting time and bandwidth.
I'm tired of all the kids and women complaining when a truck rides like a truck. If you want a sedans ride, buy one.
My 2012 rides a world of difference with a load in the bed. I wouldn't expect anything else.
D
If this shake is just due to you driving a truck that you think should ride like a caddy, when the marketing for this truck is it's towing capabilities, shame on you for wasting time and bandwidth.
I'm tired of all the kids and women complaining when a truck rides like a truck. If you want a sedans ride, buy one.
My 2012 rides a world of difference with a load in the bed. I wouldn't expect anything else.
D
Last edited by Daveleeander; 11-26-2014 at 08:36 AM.
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Adobe2X (11-26-2014)
11-26-2014, 09:43 AM
#252
I haven't loaded it up, yet. But I'm hoping that when I do, it goes away.
So you think the pinion angle is off, from the factory? The truck is 100% stock, right now. I've delt with pinion problems before, but they were on severely lifted and lowered trucks. I've heard somewhere that there needs to be a little bend in the ujoints; they're not designed to run perfectly straight. I just Google the correct angle and it said the output shaft and the rear differential should be parallel, and the shaft falls where ever it does (within reason). Do you agree with that?
Thanks for all your input on this thread. You've been more help than all the dealers that have looked at the truck.
So you think the pinion angle is off, from the factory? The truck is 100% stock, right now. I've delt with pinion problems before, but they were on severely lifted and lowered trucks. I've heard somewhere that there needs to be a little bend in the ujoints; they're not designed to run perfectly straight. I just Google the correct angle and it said the output shaft and the rear differential should be parallel, and the shaft falls where ever it does (within reason). Do you agree with that?
Thanks for all your input on this thread. You've been more help than all the dealers that have looked at the truck.
.
11-26-2014, 11:27 AM
#253
If this shake is just due to you driving a truck that you think should ride like a caddy, when the marketing for this truck is it's towing capabilities, shame on you for wasting time and bandwidth.
I'm tired of all the kids and women complaining when a truck rides like a truck. If you want a sedans ride, buy one.
I'm tired of all the kids and women complaining when a truck rides like a truck. If you want a sedans ride, buy one.
If you would have read the entire thread, you will see that I previously had a F350. I know what a stiff "truck" ride is like. This is not that kind of ride. No, I do not expect this truck to ride like a sedan; I also do not expect this truck to ride like every road is a washboard.
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11-26-2014, 12:22 PM
#254
Fast Driver Slow Truck
how many holes are in the wall from just throwing random darts at it?
go get 100 #'s of sand at lowes(like $6) and put it in the back of the truck all the way up against the tailgate like I said to do 5 pages ago and drive it. if it fixes it then you need to look at the fact that it probably has a bad or weak shock that can't keep up with the spring rate.
if you're concerned about pinion angle go to harbor freight and get the big magnetic angle finder by the welding supplies. put it on the tailshaft, then the carrier(both sides) then the pinion flange. if its out really bad you can see the shaft move in an elliptical pattern while it rotates and binds then releases.
go get 100 #'s of sand at lowes(like $6) and put it in the back of the truck all the way up against the tailgate like I said to do 5 pages ago and drive it. if it fixes it then you need to look at the fact that it probably has a bad or weak shock that can't keep up with the spring rate.
if you're concerned about pinion angle go to harbor freight and get the big magnetic angle finder by the welding supplies. put it on the tailshaft, then the carrier(both sides) then the pinion flange. if its out really bad you can see the shaft move in an elliptical pattern while it rotates and binds then releases.
11-26-2014, 06:13 PM
#256
11-26-2014, 08:03 PM
#257
Senior Member
THANK you for your valuable input.
If you would have read the entire thread, you will see that I previously had a F350. I know what a stiff "truck" ride is like. This is not that kind of ride. No, I do not expect this truck to ride like a sedan; I also do not expect this truck to ride like every road is a washboard.
If you would have read the entire thread, you will see that I previously had a F350. I know what a stiff "truck" ride is like. This is not that kind of ride. No, I do not expect this truck to ride like a sedan; I also do not expect this truck to ride like every road is a washboard.
Sell the truck and buy you a BMW 528 or a Mercedes E class. They ride real nice.
11-26-2014, 09:27 PM
#258
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11-26-2014, 11:48 PM
#259
American member
I would like a chance to actually drive and understand how severe this vibe is. At this point we are all just guesstimating.
I mean, my fx4 has occasional vibes, but I know it's not something wrong. It certainly is not continuous.
There are a certain number of rotating parts.
What so far has been checked and unchanged
Tires√
D shaft√
U-joints?
Rotors?
Bearings?
Axle?
Diff?
Transmission?
Have you inspected more than I've checked?
Am I forgetting a part.
This isn't a squeak with a 100 possibilities. This is a limited number of parts.
I mean, my fx4 has occasional vibes, but I know it's not something wrong. It certainly is not continuous.
There are a certain number of rotating parts.
What so far has been checked and unchanged
Tires√
D shaft√
U-joints?
Rotors?
Bearings?
Axle?
Diff?
Transmission?
Have you inspected more than I've checked?
Am I forgetting a part.
This isn't a squeak with a 100 possibilities. This is a limited number of parts.
12-01-2014, 12:02 PM
#260
Latest ...
I added 800 lbs of weight in the bed. Guess what. Still vibrates!
Someone mentioned the pinion angle, a few times. After the weighted test drive, I got under the truck to measure the springs, to see if a 2010 spring would fit (the third dealer told me they were not the same springs). While under there, I looked at the driveshaft and rear end again. If the output shaft and the centerline of the rear end are supposed to be parallel, I may have found the problem. The driveshaft and rear end are almost perfectly in line. Does that make sense?
After measuring the spring, I think it's identical, in size to the 2010 springs, and I've located a set of those, for the worst case scenario.
Daveleeander. If you really want to help me with this issue, quit posting on this thread.
I added 800 lbs of weight in the bed. Guess what. Still vibrates!
Someone mentioned the pinion angle, a few times. After the weighted test drive, I got under the truck to measure the springs, to see if a 2010 spring would fit (the third dealer told me they were not the same springs). While under there, I looked at the driveshaft and rear end again. If the output shaft and the centerline of the rear end are supposed to be parallel, I may have found the problem. The driveshaft and rear end are almost perfectly in line. Does that make sense?
After measuring the spring, I think it's identical, in size to the 2010 springs, and I've located a set of those, for the worst case scenario.
Daveleeander. If you really want to help me with this issue, quit posting on this thread.