DEATH WOBBLE

[BIG BROC]

I HAVE A 78 BRONCO IT PRVESIOULY HAD A 4 INCH LIFT. I CHANGED IT OVER TO A 6 INCH KIT FROM JBG. I HAVE AN EXTEEM WOBBLE IN THE FRONT END ANY SPEED OVER 25. I DID NOT PUT IN THE NEW 7 DEGREE BUSHINGS, IT HAS 4 DEGREE. WOULD THAT CAUSE THE WOBBLE OR DO YOU SUGEST SOMETHING ELSE? I HAVE 37X14.50 TIRES AND HAVE ADDED DROP RADIOUS ARM BRACKETS, AJUSTABLE TRAC BAR. I AM ALSO HAVING PROBLEMS WITH THE BRAKES, THEY WONT BLEED AND THE PETAL IS SOFT? ANY SUGESTIONS??? [-o<

 

[swampthing]

wheel balancing can cause a wobble, and as far as the brakes go does it leak fluid anywhere? i had that problem before and i had a pin hole in one of my brake lines

 

[BASE861]

I HAVE A 78 BRONCO IT PRVESIOULY HAD A 4 INCH LIFT. I CHANGED IT OVER TO A 6 INCH KIT FROM JBG. I HAVE AN EXTEEM WOBBLE IN THE FRONT END ANY SPEED OVER 25. I DID NOT PUT IN THE NEW 7 DEGREE BUSHINGS, IT HAS 4 DEGREE. WOULD THAT CAUSE THE WOBBLE OR DO YOU SUGEST SOMETHING ELSE? I HAVE 37X14.50 TIRES AND HAVE ADDED DROP RADIOUS ARM BRACKETS, AJUSTABLE TRAC BAR. I AM ALSO HAVING PROBLEMS WITH THE BRAKES, THEY WONT BLEED AND THE PETAL IS SOFT? ANY SUGESTIONS???  [-o<  

32488[/snapback]

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I had a '79 that would liek to jump off the road. I had to almsot roll to a stop before it would cure it. It was ball joints. raise the frotn off the ground and try to move the tire up. If you can then it is ball joints. With the tire off the ground move it right and left, if it has slop then it is wheel bearings.

 

[Broncoholics]

I would assume you are in 2wd feeling a shake up front?

Sounds like you might have tossed a wheel weight. I use stick on weight on the inside of the rim. When I rotated my tires front to rear the rears must have had more/ thicker weights and the calliper tore them off as I test drove down the street. I couldn't go over 25mph either. Also with tires on ground and engine off have someone turn the steering wheel back and forth. Look at the trac bar bushings, rod ends. Jack up each front tire one at a time, wobble them and see if its ball joints or wheel bearings.

Make sure the drag link and trac bar are at the same degree (parallel), this causes bump steer.

As for the brakes it sounds like the master cylinder might be bad. Ckeck for any kinks in the lines or leaks. Any brake pulls left or right? If you are stopping it sounds like its pushing air and not fluid, reason for soft pedal. Any brake booster?

 

[78Jimmy]

I know I had the same problem, Death Wobble, with a d60 in the front of my one truck. problem was resolved with a king pin shim.

 

[ol'dixie]

I HAVE A 78 BRONCO IT PRVESIOULY HAD A 4 INCH LIFT. I CHANGED IT OVER TO A 6 INCH KIT FROM JBG. I HAVE AN EXTEEM WOBBLE IN THE FRONT END ANY SPEED OVER 25. I DID NOT PUT IN THE NEW 7 DEGREE BUSHINGS, IT HAS 4 DEGREE. WOULD THAT CAUSE THE WOBBLE OR DO YOU SUGEST SOMETHING ELSE? I HAVE 37X14.50 TIRES AND HAVE ADDED DROP RADIOUS ARM BRACKETS, AJUSTABLE TRAC BAR. I AM ALSO HAVING PROBLEMS WITH THE BRAKES, THEY WONT BLEED AND THE PETAL IS SOFT? ANY SUGESTIONS??? [-o<

i had the same problem = wheel bearings ball joints jack up one side at a time and look and see if the ball joints move up and down side to side it is wheel bearings or both good luck

 

[swampthing]

i also had a 78 bronco and the problem was the trac bar. the hole on the front rear had oblonged and beat the bolt to ****. i put all new bushing in it new bolts and welded the bolt to the rear and it held up for a while until i started jumping then it broke again

 

[offroadfury]

Check your trac bar. Mine worked loose one time and caused a severe wobble.

 

[gnarly_bronco_kid]

Not saying this is a good idea or anything. but my friends bronco has that gnarly wabble at around 20-30mph. But on his bronco if you get it up to 50 the wabble goes away. LOL but I personnally would not try this. I would think it's the ball joints, allignment, or maybe try adding a quick release sway bar. those are nice.

P.S. drive safely

 

[BART'78]

Not saying this is a good idea or anything. but my friends bronco has that gnarly wabble at around 20-30mph. But on his bronco if you get it up to 50 the wabble goes away. LOL but I personnally would not try this. I would think it's the ball joints, allignment, or maybe try adding a quick release sway bar. those are nice.
P.S. drive safely

I also had the same problem and it ended up being all my rubber bushings had turn solid as a rock and warped so everything had all sorts of slack in it...I picked up a set of polyurathane bushings from the local tire company for about 60 or 70 bucks and only took me like an hour hour and half to replace them all. Let me tell you it also took care of some of the slop in my steering wheel! Hope you get down the road again safe! Later Yall, Andrew