Ford Super Duty (1999-2016) :: Clunk While Accelerating And Braking
Apr 29, 2013
So my '99 F350 4x4 is making a clunking sound and there is a distinct jolt in the truck while this is occurring.
Symptoms: From a stop while accelerating, there is a distinct jolt and clunk. The best way I can describe the feeling is like something isn't tightened down all the way so there is a split second while inertia is generated and the "looseness" catches up to the acceleration.
When stopping, the clunk and jolt is generated when the truck comes to a complete stop. When the truck rebounds backwards a bit because of the suspension pulls it backwards after stopping, you will hear the clunk again.
I replaced the ball joints a week ago an a wheel hub bearing on the right side. I don't recall this before these repairs, but it may have been making this noise. I was more focused on the grinding from the wheel bearing so I may not have noticed the clunk and jolt then.
Where I should start looking for the problem?
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Truck is a stock 2001 f250 7.3 with 205,000 miles. When accelerating or braking from about 40-60mph it starts to shake a little bit. When braking it shakes a lot more from 60 down to 40. But the faster you speed up the less it shakes when taking off. Looked at everything underneath is tight, and it has stock a stock steering stabilizer. Would a new stabilizer fix this you think?
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Ok so I'm having a problem that seems to have been getting worse. 1999 7.3, auto, 4 door, long bed, 6" lift. When I got the truck a while back I had a slight problem where if I was accelerating hard I would hear a clunk when it shifted into 3rd gear. I'm not hard on the truck that often so it took me a while to realize that the noise was the driveshaft hitting the floorboard right at the joint at the transfer case output.
The carrier bearing was flopping around a bit so I replaced that first. No better... kept driving the truck since it was only a problem while being really hard on it. But it's gotten worse so now when I tow (usually not more than 7-8k lbs) I have a bad vibration on takeoff at low speed. If I try to take off from a stop very hard with any load the driveshaft jumps into the floorboard. So I just replaced the transmission mount and checked the motor mounts, no better. Only thing I can figure at this point is axle wrap...?
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2012 f250 SC xl 6.2 - Is it normal to hear a single clunk sound on occasion when accelerating from a stop sign? Doesn't happen all the time mind you and I don't ever remember hearing it in the past.
Now just today, while backing up my driveway, as soon as I started the reverse motion, I heard the same clunk. Sounds like metal to metal and comes from the rear of the truck.
Only 7000 miles on her and I treat her like a baby...anything I should be concerned with?
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So the other day i opened the door and heard a super loud clunk noise come from the door and when I turned the car on and pulled hte window down it wouldn't go down all the way, only about 75% of the way so I assumed like BMW cars the window motor died but oddly it continued to go up and down just now 100% down.
Then 3 days later when I came to drive the car again the window went down to the 75% mark and now its jammed there with no movement even if I tried to lift the window up myself. Usually a broken motor allows this to happen but since it isn't budging I am wondering if its an electrical issue with the power window button more than the motor?
I say this because when i try to lower the passenger window from the driver side it works than out of no where on the 3rd time it wont move at all than 5 minutes later it will move or if it doesn't move I just go and pull the window down from the passenger side then I come to the driver side and try it and it works again than it'll stop again. So maybe its the power window control buttons on the drivers side that's failing?
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2009 F350 4x4 DRW. Just replaced rod ends, drag link, sway bar bushings and end links, ball joints, and shocks. I have a clunk when the axle travels downward on bumps. The only thing I see is that the tie rod assembly will rotate easily by hand and I can make it clunk when I rotate it. It does not rotate in the ends, the ends rotate with it. Thinking this may be flopping around over a bump. Does tie rod rotate easily?
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When I am driving and hit a bump in the road, especially when the rear tires contact it square. I hear a clunk at the rear end. Sounds like suspension, loose tailgate...
My truck is a 2016 F250 Crew Cab Short Bed. It has a factory installed fifth wheel hitch. I have looked at the obvious, spare tire, loose bolts... I removed the tailgate and it still makes the sound. I removed the insert in the receiver, still makes the sound. No goose neck ball in fifth wheel hitch. Checked bed bolts. Cant find it. Drives me crazy.
I also have a 2008, exact same truck, 200,000 miles, no clunking. I have driven in my friends 2014 F350 Crew Cab Long Bed, it clunks. Dealer pulled a new truck off the lot today, took a drive, it clunks. Dealer can't find it and confirms there is a clunk.
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I just got my truck back from the dealership where they said they tightened the nut on my pitman arm and now when turning either left or right when I approach full lock there is a massive pop or clunk that comes from the steering box. I have crawled under the truck and watched and felt everything as the wheels turn and the draglink, tie rod, sway bar links and cv joints as well as the front drive shaft are all fine. The noise is definitely coming from the top end of the pitman arm or higher. What it could be or how to fix it? I have an 03 6.0l f250 with a 4 inch lift all new springs and new sway bar
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The last couple of weeks a new clunk has appeared on my F350, 6.2 CC LB FX4. If I've been parked for a while, when I drive off, within the first 30 yards or so there's a clunk. Seems worse when I've turned sharply out of a parking spot. Sounds like the rear diff or drivetrain... I have a locking rear diff. Is this engaged or disengaged while "at rest"? Could it be that its slow to unlock when I start?
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I have an 08 F-250 CC SB 4x4 Diesel truck that has since new clunked when starting out from a stop and/or coming to a stop. I have 16k on it now and am getting really tired of dealing with it... The clunk starting is when I let off the brake and just apply the throttle. It feels like something slips and then clunk.
The clunk when stopping is the same as starting, except when coming to a stop.This is unloaded or when loaded w/ cargo and/or trailers. I know I can go to the dealer, but I don't want to un-spartan my truck for this...
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I have a 2002 F-250 7.3 Powerstroke 4x4. My truck has developed a "clunk" for lack of a better term when accelerating from a dead stop. It is not a shudder as it only happens once within a few seconds of depressing the accelerator and then goes away until the next time I stop moving.
It feels like either something in the drivetrain is not engaging right away, or something is releasing, like a stuck caliper or something. From the way it feels and what I've read so far about the TC/Trans, I'm assuming it is something worn in the drive-shaft/rear diff.
But it needs brakes badly (already have all new rotors & pads ready to install) so maybe a caliper is sticking when depressed and then popping loose under initial acceleration? I think this is unlikely but possible.
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I had a pretty good clunk going on and found the passenger tie rod was shot. The rest of the steer components looked fine. Fixed it and still get a nice bunch of clunks. Went over the steering again with someone rotating the wheel and didn't notice any crazy movements. The drag link twisted a bit but the joints looked solid compared to the tie rod which was completely shot.
So I decided to dig into it today. Looked again and nothing. So I took it into my back yard to drive over some humps left from stump grinding. Clunk, clunk, clunk. I stuck my head out the window and wouldn't you know it the sound seems to be coming from the rear! Took a pry bar to parts like the sway bar links, shocks, etc.... can't detect anything. Maybe a u-joint? Gotta dig in I guess.
Also my rear springs creak like nothing I've ever heard. Dirt roads it's just creak, creak, creak.
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Just moved into the 250 from years of 150's. Now have 98 miles and read that the tran would have noise but normal while breaking in.
whats normal, not used to this much Clunk while changing from P to D ect. More noise than used too I guess.
3.73 gears
2014 F250, 6.2 gas 2wd....
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When I turned it on for a second, last winter, I rem hearing a clunk, and then another clunk when I turned it off. Made sense to me.. So, I figured I'd just activate it again now, and roll up and down the driveway once to exercise it. BUT, when I turned it on this time, the light came on, but no clunk when it came on, or off. I went up and down the driveway anyway, and I THINK it felt like it was ON, but I didn't make any turns, because I figured that would be bad.
Any one that is silent when it locks? I think I saw a post where everyone said it's supposed to clunk on/off. Could it just be the season/temps, only clunks in winter? I have a 4x2 btw, so it's just a turn switch. I hope it's not stuck or frozen somehow already..
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I have a 2004 f250 with some front end troubles. When turning right once in a while it will make a hard CLUNK noise and then trying to drive down the street it drifts over to the left and I pull the wheel back to the right and when I turn the wheel it feels like I like theres something hitting somthing else in the front end. I have checked ball joints and tie rods and they are all nice and tight. Some stuff I have done that probably isn't related to my problem is shocks and sway bar end links. What this could be? Hopefully not the steering box!
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2004 6.0L Excursion Limited 4x4.
I recently developed a "rumble" with vibration while braking. I describe it as a rumble because I associate it to a similar sound, cadence, and feeling as if you were slowing down on the rumble strips you find on the side of the highway.
It is mostly only noticeable at lower speeds. I know the sound and feeling of warped rotors, but this seems different. If it makes any difference, one issue I've been dealing with is that the front transfer case does not release when 4x4 is off and hubs are in AUTO.
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First off I want to say my truck isnt throwing any codes, nor am I loosing any pressure on the brake peddle. What is going on is my brakes are working just fine I can stop from any speed and my brakes are performing just fine until I slow to about 5mph.
From 5mph to 0mph it almost feels like I slide on ice for a second, and you hear a sound almost like what you hear when your ABS kicks in. I will feel a slight fluctuation in the brake peddle and then my truck comes to a stop. It is the darnest thing. One mechanic I spoke to said he thought is was the vacuum system, another thought it may be the brake sensors....
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So I have a 2016 6.7L love it but it has this vibration at 65 mph that is worse when accelerating up a hill. It feels like an out of balance wheel but I have had them balanced 3 times. road forced 2 times. My dealer replaced the driveline also. I did a test with 400 lbs of concrete bags in the bed and it was vibration free. It almost is like the pinion angle is off.
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Have an 06 F250. When I slow down to make a turn then accelerate it's like the drive shaft spins half a turn before it catches. Been doing it for awhile now. Now I'm get a clunk when I come to a complete stop. When you stop then truck settles there is a little clunk. Does this sound like the slip yoke problem?
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I just bought a 2004 f350 4x4. There is a horrendous clunk coming from under the cab as soon as I steer and at certain rpm while driving straight. I have researched this topic for hours and everyone says sway bar links. Well here's what I have done so far and the truck still has the same terrible clunk. New sway bar links, new sway bar bushings on axle, new front drivers hub, new front passenger hub needle bearing, both front dust seals on axle, greased all ujoints and balljoints, tightened up some bolts for the dual steering stabilizer, and shook the heck out of all other ujoints and the cab mounts and they all seem good...
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I have a 2001 F250 7.3 with 175K.
Here is the situation. There is a disturbing clunk when I take my foot off the accelerator and a corresponding clunk when I push back down on the accelerator. This only occurs when the vehicle is not under load. That is, it does not happen when going up hill or on any sort of an incline. It does not happen when the automatic transmission shifts. It does not happen shifting into reverse or drive.
It does not happen when starting or stopping. It only happens when I am at 40-60, or so, miles an hour and let off the accelerator and/or press the accelerator again. It appears that I can carefully feather the accelerator to eliminate or, at least, minimize the clunk. I have crawled under the truck and it looks like all the U-joints are tight, I have lubricated the slip-yoke (although when twisted there is, like a mm of play when this is twisted, not much but a very little).
The rear-differential pinion appears to be tight (no side-to-side play or up-and-down play, or at least I can't make it move with my hands). However, when the truck is in neutral the entire driveshaft is able to rotate a half inch, or so, all the way up and down the drive train. That is, the transfer case and the rear differential appear to have a little rotational play in them, but I am guessing this is pretty normal. When in park the entire driveline seems solid.
I have seen from some of the other posts that this sort of clunking can come from leaf springs, hangers and such but since this clunk seems so isolated to acceleration changes when the vehicle is not under load, I doesn't seem like this would be the issue. No clunk when shifting, turning, bumps etc. Everything seems perfect until I am on a gentle downhill or flat and let off the accelerator. Doesn't appear to clunk when going down a steeper decline. All this gets me to thinking that the clunk is caused whenever the driveshaft rotation gets ahead of or behind the rotation in the rear differential.
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