Corvette: vibration under load

It would with the load put on it.

--
Charlie
1993 Convertible Corvette
rr.com
"Rodger Gable" <net> wrote in message
news:s188b.31544$.. 
under 
climate 
do 
drive 
they 


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In <L8a8b.23574$austin.rr.com>, "Charlie" <rr.com> writes: 

We all like a single solution to any problem but
this might be a combination of two failures. I'd
take a look at both the harmonic(torsional)
balancer and the motor/transmission mounts.

Regards, "Mike"
-- mikeellison3xxxatzzzyahoo.com --

"Rodger Gable" <net> wrote in message
news:cV48b.31501$.. 
a 
I 
Make sure that all vacuum hoses especially at the throttle body aren't
leaking. My 89 does that when a leak in the plenum is present.
Rob

Engine mounts ???..exhaust system hangers ???

I have a 93 automatic coupe that is experiencing a strange vibration at
2500-2800 rpm in first gear. It feels like an exhaust pipe hitting the
floorboard but goes away after the rpms get higher, This only occurs under a
moderate load, not if you accellerate at " normal" conditions.
I also notice that the vibration goes away if I am not running my climate
control in the automatic mode. If I turn my climate control off. Where do I
need to start looking.
I have also replaced all the u-joints and marked the half shafts and drive
shaft with paint marks to ensure that the components go back the way they
came out.
Thanks in advance for any thoughts on this problem

93 automatic coupe
104000 miles
stock components ( no mods)