Clunk only certain times on e99
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Senior User
Joined: Feb 2006
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From: Maryland
Clunk only certain times on e99
My e99 clunks only at certain times. Here's when. When one of the front tires hits a bump, it will clunk. Sounds like the front end. But if both front tires hit the bump, like a speed bump, there is no clunk. If the back tires, hit a bump evenly, there is no clunk. If one back tire hits a bump, there is a clunk still sounding like its coming from the front. And here's the real tester. When i get on the throttle hard, and let out quickly as its fully spooled, it clunks. ( you know how like the front of the truck raises then sits as soon as you let out, it will clunk then) And sometimes when the tranny shifts hard it clunks, but that could very well be just the tranny 
I was thinking maybe motor mounts? trans mounts? cab mounts? Any one else every run into this? could it possibly be sway bar or track bar bushings?
I was thinking maybe motor mounts? trans mounts? cab mounts? Any one else every run into this? could it possibly be sway bar or track bar bushings?
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Start with the cheaper fixes and check those swaybar bushings, mine were shot and got a nice kit and replaced, no more clunk. Second, raise the front end off the ground, get a breaker bar under the front tires and lift up, any play your ball joints are bad, do the same for the other side. If it is your swaybar bushings, let me know, I know a great place to get them and for cheap, polyurathane to boot.
Post Fiend
Joined: Nov 2007
Posts: 9,549
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From: Payson, AZ
Sounds like you may have 2 problems. Swaybar endlinks as mentioned and a dry slip joint in the rear drive shaft. Slip Joint Lube Link
Edit: If you buy swaybar endlink bushings make sure they are for an Early 99.
Edit: If you buy swaybar endlink bushings make sure they are for an Early 99.
Post Fiend
Joined: Feb 2008
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From: Lancaster, Pa.
This is where I got mine but call first to find out the correct replacement for your early 99. Here's the link, remember, call first. All later models, like my 03, I just ordered. Energy Suspension Parts: 4WD Super Duty (1999 - 2004 Models), Ford F250 4WD SD 1999
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Gee Thanks Joe, just rub it in!!! 
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Joe, don't catch them all. I will help you with the fishing at 5:00, so save me some. 
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From: Payson, AZ
From Energy Suspension web site: Vehicles made before March/1999 Will Use 4.5192 Instead! 4.5192 LINK
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Senior User
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From: Maryland
guess i should of mentioned that too. The ball joints are brand new, absolute no play, and the slip joint was just greased maybe 3000 miles ago. i did how ever just put new sway bar bushings on the axle housing because the bracket on the axle broken and had to be welded back on so i figured put new ones on while it was off. Now the bushings you all are talking about, the sway bar end link bushing or actually sway bar bushings? Could i have bought the wrong bushings and that cause this? (not in the end links)
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
guess i should of mentioned that too. The ball joints are brand new, absolute no play, and the slip joint was just greased maybe 3000 miles ago. i did how ever just put new sway bar bushings on the axle housing because the bracket on the axle broken and had to be welded back on so i figured put new ones on while it was off. Now the bushings you all are talking about, the sway bar end link bushing or actually sway bar bushings? Could i have bought the wrong bushings and that cause this? (not in the end links)
Edit: See the link in post #11.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Those are the ones I got for my E99 and they fit just fine.