Shake, rattle and roll...

[Burbinator]

I took my Sub to Discount to get the tires balanced due to a little shake at around 60-70 mph. In the process of that, found out my left front rim was bent a little. Since I have new shoes on the truck, I figured I'd just replace the rim and all my problems would go away, right? WRONG! It got worse...much worse.

I had them rebalance twice, rotate the tires 180 degrees, so on and so forth, no effect. I had been noticing prior to this that the truck wanted to drift right when braking. Thought it was brake related, but it's not...(new brakes, same problem)

Any ideas? The only thing that really stands out is that the front spring bushings could stand to be replaced, but would that cause an increase in vibration at speed?

And yes, the ball joints and tie rods/drag link and associated steering linkages are relatively new and/or in good shape...

TIA!

The learning curve is a toll road...ride with someone who has already paid!
<a target="_blank" href=http://photos.yahoo.com/abshort1>U.S.S. Nimitz II</a>

 

[ChevyCaGal]

Look for bad tranny mount, bad engine mount, even a bad shock mount.... Do you have a steering stablizer? My friend, she has a Bunco... and the thing would shake like a meth addict on the highway until she put one on.... might be a possible cause....?

&lt;&gt;&lt;<a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>Steph's Webpage</a>&gt;&lt;&gt;
Suck Fumes Ford Boy
I keep trying to lose weight, but it always finds me!

 

[Burbinator]

I checked all of the mounts and the swaybar bushings in addition to the other things I've ruled out so far....all good.

I have a stabilizer, condition unknown at this point. Looks new, but we all know that doesn't mean anything...

I'm going to try swapping my tires around to see if it follows the tire or stays localized to the front. Hoping it's a tire that acquired a wear pattern. I did notice that the new rim has less backspace than the others...contributor to the shake?

Nothing beats tracking down a gremlin!

LMAO @ "shake like a meth addict"...good one Steph.

The learning curve is a toll road...ride with someone who has already paid!
<a target="_blank" href=http://photos.yahoo.com/abshort1>U.S.S. Nimitz II</a>

 

[Burbinator]

Top...

Oh come on... all of this experience here and no one else has any ideas?

:-)

The learning curve is a toll road...ride with someone who has already paid!
<a target="_blank" href=http://photos.yahoo.com/abshort1>U.S.S. Nimitz II</a>

 

[zakk]

shake like a meth addict??

getting a bit visual

i thought this was a family web site

-Zakk
'77 K5 SB 400 TH350 NP203 p/t 6" Lift D60 14BFF 4.10's 36"Wrangler II's

CK5's MOAB 2002 OR BUST!!

 

[ChevyCaGal]

I went to HS with enough of them so I know more about then I should.... 3 guys in this radio class I had used to do it and talk about it. One day one guy was sitting in class and started to shake really bad and fell on the ground. So now when I see shaking I think about him.... man that guy was a loser! Anyhow switch the tires and see about that. Could have a broken belt and it's throwing it off balance? I dunno.... seems like everytime I get a vibe and go though looking at everything it turns out to be something dumb like a bunch of mud caked on something to mess up the balance or I needed to flip my drive shaft over 180 degrees and forgot too......

&lt;&gt;&lt;<a target="_blank" href=http://www.chevycagal.homestead.com/steph.html>Steph's Webpage</a>&gt;&lt;&gt;
Suck Fumes Ford Boy
I keep trying to lose weight, but it always finds me!

 

[jimmyjack]

Mine did the same thing. I kinda got the run around, the big tire thing, the bad wheel thing, I kept going back and finally one of the new guys asked me if I'd had a RUNOUT (I think) test. They basically balance the tire with the simulated weight of the vehicle on the tire. My right front was way out of the "range" and I got a new tire and all is well. If you want, you can PM me and I'll try to get more info for you.

That jeep thing? Yah I understand it....... Like my Blazer? <a target="_blank" href=http://community.webshots.com/user/blazerk5>http://community.webshots.com/user/blazerk5</a>
Jim

 

[Burbinator]

OK...tested my theory.

Put my spare on the front left (where the vibe is coming from) and PRESTO! No more vibe!

So, my theory of that tire developing a wear pattern seems to hold true - or - I got a bum rim from the Discount boys. The tire is probably more likely, though. Either way, I'll get it fixed tomorrow. Thanks for the help!

And on a side note: The GM 3/4 ton spare is downright UGLY. Have to fix that, too!

The learning curve is a toll road...ride with someone who has already paid!
<a target="_blank" href=http://photos.yahoo.com/abshort1>U.S.S. Nimitz II</a>