: the case of the mysterious death wobble


Andy351
09-20-2005, 09:55 AM
so i went to fordyce over labor day weekend, drove the bronco (87 D60 front) there and back. put a hole in one of my iroks, but no big deal i drove home on a spare and it actually drove better on the way home. so i got home and parked the bronco and drove my super sweet jetta till i had to move. when it came time to move the bronco i drove it around and strangely it developed a nasty case of death wobble while sitting for a week and a half...i'm a little stumped since it was just sitting and now it has a problem. i'm in SLO now but i'll be making a rescue trip home to fix it and bring it down but i need some clues where to start.

things i have thought of:
- adding a steering stabilizer (i should have had one from the get go)
- adding a second washer to the kingpin springs (they pass the 12 and 6 jiggle test, they were rebuilt last summer)
- replace the bent tie rod end (was also loose, but tightening it didn't fix anything)
- checking the wheel bearings to see if one has seized while it was sitting (i doubt it because i repacked them less than a month ago)
- friends have mentioned flat spots, but this is real death wobble, not just bouncy tires (i've experienced both)

click the link in my sig to see the specs

saf-t scissors
09-20-2005, 11:34 AM
As far as quick fixes go, I'd try rotating the tires. Also repack and retorque the wheel bearings. I've had DW at least 3x that was due to nearly imperceptible slop in the wheelbearings. Or at least, tweaking the bearing preload changed the susp enough to make it go away.

Rotating the tires does the same thing -- slight change in mass, roundness, balance, etc will make the difference sometimes. It might not get to the root of the problem, but it can be enough to manage the DW, if not eliminate it.

If the bent tie rod affected your toe, fix that... but so long as the ends are tight, the bend shouldn't be causing any problems.

broncman
09-20-2005, 05:32 PM
tracbar?? Loose steering box??

jopes
09-20-2005, 07:11 PM
tracbar??



leaf sprung 60

Andy351
09-24-2005, 11:57 AM
fixed it, added a washer to the kingpins and tightened up the meshload on the steering box.