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Old 05-25-2011, 09:18 PM   #1 (permalink)
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steering wobble

I have a 86 SAS runner with a 3.4l, 40” irocs ext
I am getting a wobble in my steering at 60 to 70km
I replaced all my tie rod ends and trunnion bearing recently and its still there.
I noticed my that my tie rod has a bend in it but was told if my tow in is good that it wont affect anything and it is at 3/16 in.
Any thoughts
Thanks.
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Old 05-25-2011, 09:26 PM   #2 (permalink)
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When was the last time you had your tires balanced?
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Old 05-25-2011, 09:31 PM   #3 (permalink)
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When was the last time you checked your spring and shackle bushings. The preload on your trunnion bearings and adjustment on your wheel bearings? Check your toe-in.
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Old 05-25-2011, 09:32 PM   #4 (permalink)
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check everything.
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Old 05-25-2011, 09:32 PM   #5 (permalink)
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wheel bearings and spring bushings
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Old 05-25-2011, 10:42 PM   #6 (permalink)
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Are you running wheel spacers and/or <3" of backspacing on your wheels? If so your Ackerman angle is all out of wack and will cause death wobble. I ran the 1.5" spacers when I put my SAS on. After driving it one trip I took them off. With 2" bs wheels and the spacers it was scary to drive over about 20 mph.

I still get the shakes on the road about 30-35mph but above or below that and it settles down.
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Old 05-26-2011, 06:13 AM   #7 (permalink)
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Way to be helpful!

Quote:
Originally Posted by Hyena View Post
check everything.
To the OP, along with everything mentioned, also check your caster angle.

People have had lots of luck with Davez no death wobble shackles. The stress that we put on a shackle without the sleeve (any Trail Gear Shackle) results in looseness in the setup, and results in deathwobble. This gets worse if the shackle plates don't sit flush with the bushings, or if the bushing hole has been worn out. People can temperarily fix this by tightening down on the shackle bolts... as a result of this is just makes them worse over time.
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Old 05-26-2011, 07:17 AM   #8 (permalink)
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Search "death wobble"...though everyone above has pretty much layed it out for you. In addition, realize toe doesn't have a magic number, toe-in for 40's will be different than toe-in for 27's when using the standard method of measuring. .02
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Old 05-26-2011, 07:22 AM   #9 (permalink)
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Quote:
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Search "death wobble"...though everyone above has pretty much layed it out for you. In addition, realize toe doesn't have a magic number, toe-in for 40's will be different than toe-in for 27's when using the standard method of measuring. .02

yep death wobble its something you will just about always have. and if you fix it, great, but one trip wheeling and it will probably be back again...after a while you will get used to it and it wont be a big deal...just dont drive by a cop while shaking they tend to pull you over while in that 35-40mph death wobble sweet spot
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Old 05-26-2011, 07:51 AM   #10 (permalink)
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Quote:
Originally Posted by DTCsk8er View Post
Way to be helpful!


People have had lots of luck with Davez no death wobble shackles. The stress that we put on a shackle without the sleeve (any Trail Gear Shackle) results in looseness in the setup, and results in deathwobble.
Most of the luck with going to those is mainly from people replaceing there worn out bushings they had on there rigs when they replace those shackles. Dont get me wrong though they are quality and i do have a set on my truck. But bet just replaceing the bushings with good quality ones would be just as effective a and cheaper in the long run.
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Old 05-26-2011, 07:53 AM   #11 (permalink)
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Quote:
Originally Posted by spotvangogh View Post
that it wont affect anything and it is at 3/16 in.
Any thoughts
Thanks.
that actually sounds a bit much for 40's.
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Old 05-31-2011, 10:39 AM   #12 (permalink)
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Quote:
Originally Posted by FuzzyZ View Post
Most of the luck with going to those is mainly from people replaceing there worn out bushings they had on there rigs when they replace those shackles. Dont get me wrong though they are quality and i do have a set on my truck. But bet just replaceing the bushings with good quality ones would be just as effective a and cheaper in the long run.
I agree, if you dont mind changing the bushings often you dont need our shackles. Our design (Toyota factory style) the bushings will last much longer.
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Old 05-31-2011, 11:14 AM   #13 (permalink)
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Quote:
Originally Posted by TOYOTAPARTS View Post
I agree, if you dont mind changing the bushings often you dont need our shackles. Our design (Toyota factory style) the bushings will last much longer.
I was literally replacing shackle bushings every other trip out. Then I bought the "Anti death wobble shackles" and haven't needed to replace them since. Been over a year now without issue. I'm pretty happy with that.

Running 38.5 SX's I had some pretty serious death wobble. And it took a lot to get it under control. I replaced/adjusted the following

- Leaf spring bushings/Shackles
- New Trunion bearings
- BB balanced the tires
- Adjusted alignment
- Replaced the stock steering arm studs with ARP studs.

And I still have a little shake to the truck in that awesome 30 to 40 mph zone.
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Old 05-31-2011, 11:32 AM   #14 (permalink)
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This might sound stupid but I had some scary death wobble at about 40-45 MPH and I put a new steering stabilizer on and it helped. This was on a stock suspension 84 though
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Old 05-31-2011, 03:42 PM   #15 (permalink)
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This may sound retarded, but mine turned out to be blown motor mounts. With the drive train slopping around it made the whole truck shake going down the road. I had really bad death wobble even after fixing/checking/replacing all of the stuff listed above. I replaced the torn motor mounts with Dave'z and the wobble is gone.
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Old 05-31-2011, 08:27 PM   #16 (permalink)
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Thanks for all the replies.
I am still trying to sort it out. It’s not by any means a death wobble. It can be if I hit a big bump at low speed but if I stomp on the gas it’s gone.
I have checked just about everything and through in a steering dampener.
The spring bushings are the next step I just need to figure out what the springs are out of. The bushings in them look like the ones in the 63” Chevy’s.
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