highway death shake

[carl]

There is an update about 11 posts down.

[jhudspe2]

ok i dunno about anyone else but i have the highway death shake right around 64-65 mph and its stops somewhere over 79 mph or so well i had no idea what it was but my girl was playing with my 7 mo in the yard and noticed the air deflector that is under the front bumper was hanging there by the drivers side well i just ignored it at first then i thought hard about it what if the plastic is stiff enough that 0-60 mph doesnt bother it or bothers it slightly and when u go just a little faster it causes it to shake rapidly.. if u havent looked its attached to everything under there the bumper i mean everything i also noticed mine was missing a bunch of bolts and stuff so on the ride home from work i duct taped it pretty well just to test this idea and i swear that for the first couple of miles it was gone and then it came back due to the tape coming off.. has anyone else looked at there's to see if its loose??

[golfyeti]

ok i dunno about anyone else but i have the highway death shake right around 64-65 mph and its stops somewhere over 79 mph or so well i had no idea what it was but my girl was playing with my 7 mo in the yard and noticed the air deflector that is under the front bumper was hanging there by the drivers side well i just ignored it at first then i thought hard about it what if the plastic is stiff enough that 0-60 mph doesnt bother it or bothers it slightly and when u go just a little faster it causes it to shake rapidly.. if u havent looked its attached to everything under there the bumper i mean everything i also noticed mine was missing a bunch of bolts and stuff so on the ride home from work i duct taped it pretty well just to test this idea and i swear that for the first couple of miles it was gone and then it came back due to the tape coming off.. has anyone else looked at there's to see if its loose??

holy smokes, you might be on to something. I too noticed that problem with mine a couple of years ago and recall just trying to prop up the low-hanging air deflector (bottom part of the wheel well liner IIRC) on the drivers with a plastic plug to replaced one of the lost oem plastic snaps that holds the deflector to the back of the air dam. Your suggestion kinda sounds like my "loose/flapping air dam" theory. I'll have to have a look at how my loose deflector patch job is holding up.

Man, that would be a welcome discovery of the "underlying" source of the shimmy problem.


Will report back

[Ken_W]

So; golfyeti, how did this work out?

Ken_W

[golfyeti]

So; golfyeti, how did this work out?

Ken_W

Ken, sorry, since I last posted my car died at the lake (won't turn over - fuse box issue I think) so I have not been able to test this.

[bonnelover]

I had this problem on my 97, it was the tires. I took the tires to get them road forced balanced at another tire shop, since Goodyear could not get them balanced right, and they found out that one of the tires had a high spot on it that was causing the vibe. The tires were new. Goodyear gave me a new set, instead of replacing the one, which was dumb. Had a vibration with the second set also. This time Good year found out that two of the ties had high spots. Ended up with a third set of tires, different series, and the vibe is gone. Three sets of tires in one month, lol. It ended up just being the tires and not any of the other things that I had read about!!!!