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Discussion Starter #1
I have a motorhome with a 2006 6.8L three valve V-10 and the five speed TorqShift transmission. It recently started making a very strange sound...

http://youtu.be/FKVNiwRtXyY

It happens when it's cold and I just start off driving for the first time. It also happens on upshifts under a heavy load (like when going up a steep hill). I've also noticed it happening when the engine is under a heavy load going up hill and I let off the throttle dramatically.

Everything seems to be running fine other than the sound and there are no codes.

Anyone have an idea what this could be?

Thanks!
 

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Flex plate loose?
 

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I believe I've isolated the noise to this box. It's mounted to the front of the intake manifold and has a four wire connector going to it.



Any ideas what it is?



Thanks!






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