Car Talk discussed a problem like this once. It turned out to actually
be something like a marble that had gotten into the unibody channels and
was rolling back and forth upon accel/decel. But yours doesn't sound
like this. Sounds more speed/rpm related. So is it definitlely speed
related? Or could it be rpm related?
Marty
Brian Mingle wrote:
>
> I am so upset! I have taken my truck back to the dealer THREE times for the
> same problem, and they STILL don't know what is wrong with it! It's still
> the same problem, marble in a glass jar noise at 30-35mph. It went from the
> brake pad moving in the caliper, to the idler pulley being bad, to the
> transfer case. Now it's we don't know what is making that noise. The
> dealership isn't a Dodge dealership, it's a Chevrolet dealership. But you'd
> think that Mr. Goodwrench could find ANY problem, and fix it. ;-)
>
> Are there any mechanics on this listserv who could lend a fellow Dak owner
> a hand? The noise is a metallic rattle, and occurs when the truck is at the
> speeds of 30-35mph. It changes to a growling noise at higher speeds. Maybe
> it stops at higher speeds and the growling noise is a new noise, but know
> one seems to be able to nail it down.
>
> Any suggestions?
>
> Thanks
>
> Brian S. Mingle
> 98 Club Cab Sport 4x4
> 5.2 Magnum V-8
> Metallic rattle
> Color: green
> Driver's color: Red from anger
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