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Old April 15th, 2018, 18:40   #8
jerrymander
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Join Date: Feb 2012
Location: Cowford, FL
Fuel Economy: 286 lbft
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If you have low-power shudder only, it is the flywheel. If you have all-power shudder, especially at idle, it is your mounts. As the engine speeds up, centrifugal force pushes the flywheel plates into alignment, causing the chatter to disappear. (I mean, you already troubleshot this, but that is how you can tell in the future.)

I would inspect all those parts for condition. You'll probably want or need a new clutch and throwout at the least.

As for a replacement flywheel, you should consider getting an aftermarket single-mass flywheel from someone like Southbend. Engine noise will increase dramatically at idle, giving it a noticeably diesel chattering noise, but the flywheel will last forever. 200k miles seems to be about the life of an OEM clutch and flywheel: my clutch gave out at 130k. I would try to drive a car that has one installed already, because it is a noticeable difference from stock in terms of shift effort and action.
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