trans shutter

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Oct 27, 2015 | 05:37 PM

Bird-Dog 250

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Joined: Sep 2015

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From: Otto, NC

trans shutter

Has anyone encountered a shutter from what appears to me as something originating from the drive line under load? Living in the Smoky Mountains I'm going over the mountains quite often. Under a load condition, up one of the 9% grades for instance, with or without a load and under throttle my 97 F250 7.3 has a shutter to it. You can feel it in your seat. I'm hoping the trans is not about to give up the ship!!!???

Oct 27, 2015 | 09:24 PM

nwjones18

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Joined: May 2015

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I'd dump a bottle of lubguard red in it and see what happens.. The stuff has worked for me multiple times in the past.

Oct 28, 2015 | 05:38 AM

Bird-Dog 250

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From: Otto, NC

I did do that already. Since I did it I've driven about 60 miles or so. Does this stuff take some time to work into the clutch plates?

Oct 28, 2015 | 07:45 AM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,730

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From: SE Florida

If it isn't shifting when it's shuddering it almost certainly isn't the clutches in the transmission. It is much more likely to be a problem with the driveshaft, such as a failing u-joint or carrier bearing.