So I'm getting a mild to severe shudder depending on load and acceleration rate from stop to 10-15mph... It's worse if I'm on an incline...This has started since having a lift installed...I'm guessing it has everything to do with pinion angle...right?
1999' F350 7.3L 4x4
Crew Cab Long Bed
Driving into work this morning, I came up to the first stop sign before I get on the "freeway" and noticed a weird vibration. As I slowed to stop I could have sworn it felt like the engine was being lugged, the same feeling you get in a manual when you try to come to a stop without using the clutch. I thought for sure the engine was going to die. The engine RPMs dropped to about 800-900 RPM and once I got to a complete stop the RPMs went back to normal.
It seemed to do this every time I came to a stop. Could my torque converter be locking up and not releasing as it supposed to causing the lugging sensation I'm getting? The truck accelerates fine and idles fine once stopped, but when slowing I get that weird vibration and maybe the lugging sensation is just in my imagination and has nothing to do with the engine.
I do have a vibration from a missing wheel weight, but that's usually felt at about 34-35 mph. In addition, I also have a bit of a brake vibration when slowing down quickly, such as when slowing quickly from 65 to turn off the highway onto my local road, but this is a completely different vibration.
I just bought my 2015 F350 long bed Platinum a month ago, and the first trip with my 12,000 lb. 5th wheel had a vibration when starting out, but only from a stoplight with some acceleration or an incline, not at level slow startup.
View 6 RepliesMy 2015 F-350 Super Duty has a noticeable vibration between 5 and 15 mph when accelerating with my 5th wheel. The 5th wheel is heavy--around 14000 pounds. The pin weight is heavy--around 3000 pounds. The Owner's Manual says on page 191 "When driving with a trailer or payload, a slight vibration or shudder may be present due to the increased payload weight..." (This was brought to my attention by my dealer.)
Seeing the thousands of F-250 and F-350 Fords pulling 5th wheels out there on the road, I wonder how many have this "slight vibration or shudder" and what they have done about it.
I have this bucking a jerking when pulling my Sundowner LQ horse trailer, primarily in the 40-50 mph range. I can let off throttle and it stops but resumes unless I feather the throttle.... 2008 f 350, 4WD, 6.4, 48k miles....
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View 3 RepliesWhen I bought my 05 350 dually it had been wrecked, the rear diff was under the bumper and most of the rear suspension, including the back part of the rear drive shaft was in the bed of the truck. I have gotten everything back in place, and have driven the truck for a few weeks, but I knew I was going to have to replace the ujoints because there was visible damage to one of the caps. I have also had a vibration at about 45 mph. I had no way of knowing how the original driveshaft was oriented at the slip yoke so I went with best guess. Now in my research I read that if the driveshaft is not put back exactly in the same position vis a vis the slip yoke it will be out of balance.
Also if the drive shaft is dropped it is scrap, and if I have any lift on the truck {it had 4 inches when I got it} the whole thing will shake itself to pieces. Most of the answers to other drive shaft questions talk about taking things to a good driveshaft shop. No such thing here in the vast stretches of My state. I am pretty much on my own as far as building or repairing this thing. Is there any way to determine how the shaft was originally oriented? I also have some damage on the end of the yoke and will have some trouble getting the ujoint apart. Is the shaft now junk? And if I get an ebay replacement, how do I tell if that shaft is in the right orientation?
So last week I installed a 6" lift and once we got it done I could barley turn right at all. So I decided to put a drop pitman arm on yesterday with a buddy, thinking that was the issue. But I still have the problem, and I very badly need to fix it and don't know what it is. Turning left is completely fine however. It feels like I'm trying to steer an 18 wheeler right now.
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View 2 RepliesTrying to figure out my rear pinion angle should be. I still have vibration in the truck around 65-70 mph and sometimes around 80mph if i go that fast. I checked my rear axle last night and its at 8.5 degrees on top of the pinion snout is that correct???? And i forgot to measure the rear driveshaft angle but i can do that after work when i get home. Truck is a 2004 ext cab short bed 4x4...
View 7 Replies2003 in sig. when going around corners slow I can feel and hear a chatter or vibration coming from what I think is the rear end. I am running amsoil 75/140 in it and added some friction modifier. Do my clutches are shot and making noise or do I need to add more friction modifier ?
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View 2 RepliesI have a 02' 250 4x4 with 250000 miles on it. While driving between 55 to 65 mph there is a roar and vibration that seems to be coming from the rear. I have about 35% tire tread left and have had the rear tires balanced and it still does it. Having issues with drive shafts unbalanced or rear ends?? I am not sure where to start....
View 1 RepliesI finally got my lift installed the other day from PMF. My question is how do I get my pinion angle corrected on the front drive shaft? I know Trevor sells a Tcase clocking adapter may have to go that route IDK Unlike the rear there's only so much pitch you can put on the front axle until it causes issues with steering. I was thinking of going with an aftermarket front drive shaft designed to handle harsher angles.
I live in the mountains and after installing the lift and pulling a trailer on some of theses steeper gravel roads I can feel a harshness or something coming from under to front of the truck. I'm unable to post pics since I'm back on the road but I can visually see the front drive shaft angle is definitely not in line like it was.
I'm currently running PMF 2.5 alpha with a 1'' spacer and 3 link kit up front and 5'' progressive leafs and traction bars out back. I was able to fix my rear shaft angle using shims on my carrier bearing ( not really a big fan having 1 1/2'' of stacked shims BTW ) ....
I have a 02 f250 powerstroke and I wanna put a suspension lift kit on it I wanna go with a 6 inch lift but I'm afraid if I go any higher than a 4 inch I'll have to change to much. What I would have to change and if I would have to extend any of my brake lines also the truck is a cab and a half with an 8 foot bed so I do have a carrier baring on the drive shaft would I have to change anything with that?
View 14 Replies2003 f250 6" lift on 35s. How to lift the suspension to change out spring bushings? Was thinking using two chain falls on tow hooks on the front, any easier, safe, cheaper way. I have a farm jack but need to weld a plate on bottom of it for more support...
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View 5 RepliesJust installed a 4" lift sunday, with a BDS drop pitman arm and then i retorqued it to 185 ft/lb. I now have this extremely low speed (<2mph) or stopped clunking whenever i turn the wheel. I just replaced the upper and lower tie rod that goes from the pitman arm, and its still doing the same thing. Steering box is shot?
Clunk after lift install - YouTube .....
When installing front lift shackles, do you place jack stands under the axle, or the frame? I can't really find an answer. I assumed the axle, but i saw a thread and from what i could see it looked like it was supported at the frame and the axle was hanging free in the air. Just want to be sure before i start unbolting the stock shackles tomorrow and kill myself.
View 14 Replies