Ford 6.7L Power Stroke Diesel :: Rear End Bounces At 40 - 45 MPH
Nov 12, 2010
Ever since I picked up my truck (350 6.7, c/c, srw, lb) I get a "bounce" in the back of the truck right at 40 mph and it stops right at 45 mph. My first thought was that I have a bad tire. I have 18" Continental A/S tires on it. The bounce gets progressively worse if I stay between 40-45 mph but clears right up if I slow down or speed up out of that speed range.
This week I took the truck in because of the change oil light came on with only ~1200 miles since oil change. I finally remembered to tell the service department about the bounce. They had my truck for 3 full days and all they have managed to do is confirm my complaint, not fix it. They road pressure balanced the tires 3 times and they still had the bounce. They called the Ford hotline and were told to take the tires off of a brand new lot truck and see how they were. The bounce is still there with the brand new tires.
The bounce is unaffected by rate of acceleration or gear the tranny is in... it just happens at 40-45 mph no matter if I drive like my granny or a jack rabbit. I have heard comments like "its the nature of the beast" but I don't think so.
I took my truck back for the weekend but the tech is waiting on another reply from the hotline as to what to do next. Since the new tires didn't work my next guess is the drive shaft or rear end since it is definitely speed related. I just realized that I don't think I notice it when I am hauling my 5'er but I am not 100% sure about that.
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I have a 2013 f350 4 door longbed single rear wheel. The rear end bounces violently at 45 and 65 mph. Just today I had the truck had new shocks put on, was aligned balanced and tires rotated but it still bounces...
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The cross members on my bed are toast. The whole bed bounces as I drive down the road. I know the cross members can be put in. I'm also considering a whole new bed. I keep hearing about these companies that pull the beds off new trucks to install custom aftermarket bodies, then sell the bed.
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I have a 2012 ford f 450 which has the standard Rancho shocks,the problem is the ride is very rough and the truck bounces when the road gets a little bit undulating. How did you fix it.
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I currently have the rear axle shafts off the truck. I took off, cleaned then put on the rear diff cover.
I live in an area that does nothing but form rust anywhere and everywhere in very little time.
I don't want rust forming in the rear diff gears - can I fill the rear diff up ? Or will it leak out of the rear shaft holes ? Can I fill it up halfway then ?
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Truck started riding weird, checked and my right rear tire is cupped. So now I get to buy new tires! I guess 60K and change on the original Michelin's is pretty good - whatdy'all think?
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I wasn't sure if I should be having any sway at all while pulling our new 30' TT. Dry wieght is 7200lbs, GVW is right at 9500lbs, tongue weight is around 800lbs, and I'm running a Fastway E2 WDH with sway control built in. While towing this weekend, I was experiencing a very slight amount of sway. It wasn't what I considered to be much of an issue but my wife and daughter both asked why the truck felt as if it was moving side to side slightly. When I say slightly, imagine a small glass of water filled about 1/4" from the top. The sway wouldn't have been enough to spill the water, but enough to sway it slightly back and forth. Winds were about 3-8mph hitting me from the north west (in relations to my trucks heading).
I do have some suspension enhancements that might have contributed to the sway. I have roughly increased the rear end by 4" by adding add-a-leafs and F350 blocks. I have Fox 2.0 shocks and a Helwig Bigwig sway bar. Plus I'm running 295 Nitto Trail grapplers , all 4 at 80psi. I've read that the more aggressive tires could also be a contributor.
My question ultimately is: should I be feeling any sway at all? Is a very slight amount of sway normal when pulling a 30' 9500lb rear hitch pull?
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I want to remove the 60% portion of the rear seat (seat and seatback) in order to make some room for my dog on a long trip this summer and I don't need him fighting with my daughter for space on the seat. Removing the actual seat back is easy enough, but I want to disconnect the middle seat belt at the bottom. It appears to click into the piece that attaches to the truck floor, but I can't figure out how to release it. There is a small hole in the "thingy" (yes, that's the technical term for it ) that I assume would be related to the belt release, but I can't seem to get it to release.
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When I bought the truck it had some crap tires on it and the deal was that they had to put tires on it for me. I just picked it up and notice that I have a vibration at 40mph it then goes away by 45 then it comes back at 60 then gone by 65. The vibration feels like it is come from the rear.
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I have tried the dealership 3 times and have not been able to get the rear heater to work properly. When the vehicle is moving I have heat but if I slow or stop the heat goes away. I believe it only happens to the rear heater as front feels fine.
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I thought my brakes were sticking........don't think thats the issue. My rear end bounces....you can see it, and its only certain times...mostly when its hot, or I've been driving for a while (an hour maybe)
I have been taking notes on the symptoms, and finally got some noise today. When the rear end starts to hop it sounds like you are riding on rims and it will actually slow the truck down if you let off the gas.
The brakes aren't hot beyond reason, and I've noticed that it occurs mostly after making a sharp turn???? Or a fast medium turn such as a quick merge.
I think something is either coming loose in the rear or ?????? Not sure Also, when I pull my camper I haven't had it happen yet.......may be a coincidence.....? Or the fact that I take turns slower when its attached.
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1999 4.6 F150. So my truck is 2wd, and I have noticed that after about an hour of driving, and regular braking at turns and stop lights that between 25 and 55mph my rear end bounces like I am riding on speed humps. Not subtle at all. You can look in the rear view mirror and see the bed going up and down about 2". Feels like it has square tires if you know what I mean.
Anyway, I checked the rear brakes thinking maybe they are old and starting to stick. I have never smelled any brake burning, but I can only assume its the brakes because in that same hour the rear brakes develop an uneven feeling. I am sure you know what I'm talking about......when your brakes go bad you have that on/off brake feeling. Like surging I guess.
They are drums by the way. The shoes themselves don't look bad.....there is still meat on them. Maybe about an 1/8". No rivets showing or anything. The passenger rear shoe has one hairline crack at the top, but no other signs of damage.
Lastly, I checked the rear end and I wasn't sure what the margin of acceptable play is for in and out movement of the rear wheels. If I grab my tire I can push in and pull out with about an 1/8" of play......normal????
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What is that Burning Smell?
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I ran about 500 miles today loaded up pretty good and noticed every bump I hit that was enough to rock the truck and trailer that there was a noise I've never heard before. It was like the difference between asphalt and concrete road surfaces, but was only present when the springs were sufficiently compressed. Temps were between -10 when I left to 10 or so above when I was destinated. Would that cause the noise?
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How to figure out what caused my rear seats to lose heat?
No heat, no illumination on the buttons
Fuse looks good
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2011 F-350 CC, 45k miles... Found out yesterday mine is leaking. Way to early for these issues to pop up.
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I have a 2015 F350 6.7 DRW King Ranch with approx 12800 miles on it and have recently developed driveline noise which sounds like the rear axle is binding when backing up to the right. The truck has the 3.73 limited slip differential. Not sure what could be causing this. The front hubs are in "Auto" and the truck is not in 4-wheel drive. I don't notice the noise when moving forward, only when backing up to the right or left. Never noticed the noise when backing in a straight line. For whatever reason, when backing up to the left, the binding noise is not as prominent as when backing up to the right. Binding noise is most noticeable when front wheels are turned hard to the right.
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What is the secret to getting the rear center caps off a Dually Without scratching the hell out of them with the tire tool?
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2011 F350 with the rear window defroster not working on the slider window, just the glass that slides.
I had them look at when it was in for other warranty work and the dealership says it is not covered by the ESP. I looked up the ESP and it states that it covers heated back glass(electrical only). The dealership says it is considered glass and it isn't covered. If it was the outer sides of the back window it wouldn't bother me, but it is the center piece.
I had it looked at a while back when the truck was in for different warranty work and they supposedly fixed it, it was never fixed but I just thought I would get it fixed next time I was in there instead of just going in for that. Last time I was there I was under the 60K mile warranty and it is covered under that, but not the ESP supposedly. Bad dealership or just live with it?
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Truck is a 2011. What about fixing?
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