Donny,
Is it a Hum or a thrum? It almost sounds like a pinion to driveshaft
"rotational" misalignment. Im probably asking for it but does it go
Hummmmmmmm Or Thrum Thrum Thrum... If it "thrums" then it may be the rear
axle alignment. The pinion and the driveshaft should not be in the same
plane. If they are (or are too close to being in the same plane), you get a
thrum...
BKB
-----Original Message-----
From: Donny M Hayes [mailto:hayesdm@scott.net]
Sent: Thursday, September 17, 1998 8:25 AM
To: dakota-truck@buffnet.net
Subject: DML: Re: RE: 90+MPH Resonation
Well that is the strange thing, you can't really feel it, maybe just a very
small amount, but lots of other cars I have owned have a wierd feel at those
speeds. The sound is the main thing, just really a loud HUM is the best way
I can describe it... I would like to have it fixed, even though I rarely
drive that fast, I would like to be able to without being afraid something
is about to come apart on me......
Any other ideas?...
Thanks
-----Original Message-----
From: Mok, Alan (SPB Brentwood) <AMok@spbank.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Thursday, September 17, 1998 10:16 AM
Subject: DML: RE: 90+MPH Resonation
>It's audible and you can feel it too? From the front or back? If you
>can hear it then it may be axle or wheel bearings.
>
>If it's just a vibration put it in neutral and if it's there it could be
>your wheels or driveshaft being out of balance.
>
>
>Alan
>
>
>
>'98 Dakota R/T (Headers, FABM & waiting for Shift kit)
>'89 Mustang GT (347, Griggs, S-trim...)
>Ducati 916 (someday)
>
>
>
> -----Original Message-----
> From: Donny M Hayes [mailto:hayesdm@scott.net]
> Sent: Thursday, September 17, 1998 5:36 AM
> To: dakota-truck@buffnet.net
> Subject: DML: 90+MPH Resonation
>
> Hi All,
>
> Just a quick question--mainly to the other RT owners,
>but may apply to all.
> I have noticed a strange HUM (drone, vibration, ????)
>from my RT at high
> speeds. It normally starts about 85-90 and gets fairly
>bad by 100+. What
> could be causing this? I don't have any other strange
>vibrations at any
> other speed or RPM level. Could it be tires?
>Alignment? Slightly out of
> balance drive shaft? How do I explain to the dealer
>that my truck seems to
> hum at 100 mph?
>
> Thanks,
> Donny M Hayes
> 98 5.9 RT CC Amethyst
>
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