chatter vibration above 65mph, what is it?


astroturf
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Re: chatter vibration above 65mph, what is it?

Post by astroturf »

Have you checked u joints?
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LaGrasta
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Re: chatter vibration above 65mph, what is it?

Post by LaGrasta »

Yes, I have. Although originals with 174k, they seem perfect.
1998 Astro, 246,000 miles

K&N air filter
TruCool trans cooler
2" Overland lift & 15" BFG Terrain, 3.73 gears
JET Performance SCU-2000 (Speed Control Unit)
Gabriel Ultra shocks, rear AirLift bags & sway bar
Draw-Tite Dual Port Hitch System, hitch-mounted bike rack (4), hitch-mounted cargo tray, Thule roof-mounted cargo box

astroturf
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Re: chatter vibration above 65mph, what is it?

Post by astroturf »

Reason I ask is...

Mine are at 172,000 and I am getting the same type of vibration.

Thanks
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LaGrasta
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Re: chatter vibration above 65mph, what is it?

Post by LaGrasta »

There's always a chance I'm wrong, but they seem good, no hint of a problem. For what they cost and how easy they are to replace, maybe I should swap them and be done with it.

I'm pretty certain it's the rear wheel bearings, although replaced awhile back. I'm going to move forward and swap these and see where I stand. I'll let you know what I find, please do the same.
1998 Astro, 246,000 miles

K&N air filter
TruCool trans cooler
2" Overland lift & 15" BFG Terrain, 3.73 gears
JET Performance SCU-2000 (Speed Control Unit)
Gabriel Ultra shocks, rear AirLift bags & sway bar
Draw-Tite Dual Port Hitch System, hitch-mounted bike rack (4), hitch-mounted cargo tray, Thule roof-mounted cargo box
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1Gary
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Re: chatter vibration above 65mph, what is it?

Post by 1Gary »

1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......


Rochester,NY

astroturf
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Re: chatter vibration above 65mph, what is it?

Post by astroturf »

LaGrasta wrote:There's always a chance I'm wrong, but they seem good, no hint of a problem. For what they cost and how easy they are to replace, maybe I should swap them and be done with it.

I'm pretty certain it's the rear wheel bearings, although replaced awhile back. I'm going to move forward and swap these and see where I stand. I'll let you know what I find, please do the same.
Will Do
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Re: chatter vibration above 65mph, what is it?

Post by LaGrasta »

tires! it was my new tires!
I bought a $900 set of tires and rims off craigslist for only $250. They had about 1000 miles on them and looked brand new.

After my trouble started, I had them rebalanced and the mechanic did it no problem so I thought they were good. I finally, with the van on jacks, put it in gear. The rim was true, but the tire itself was out of round.

A professional mechanic friend said they will true up after a decent "hot" run. He said he's done exactly this many times, so I'm hopeful they will too. I wish I would have just bought new tires, ugh!
1998 Astro, 246,000 miles

K&N air filter
TruCool trans cooler
2" Overland lift & 15" BFG Terrain, 3.73 gears
JET Performance SCU-2000 (Speed Control Unit)
Gabriel Ultra shocks, rear AirLift bags & sway bar
Draw-Tite Dual Port Hitch System, hitch-mounted bike rack (4), hitch-mounted cargo tray, Thule roof-mounted cargo box
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