Matticus
Well-Known Member
Check the u joints and rear half shafts for play too. Plus check trans mounts and motor mounts. Clunks can come from lots of places.
Those being bad just doesn't add up to what I am experiencing. If the transmission and/or motor mounts, rear half shafts, or u joints were bad, I should be able to recreate the problem by manually downshifting to 3rd or causing it to downshift by pressing the gas pedal down to initiate the shift. Just about any hard torque event should reveal any play or worn parts in that category. But it only occurs on deceleration. I could even see those parts being this issue if it only occurred on hard deceleration when you have stress throughout the drive train, but it happens under incredibly mild deceleration. I'm talking a completely flat road, taking 10 seconds+ to go from 30 mph to 25mph and you'll still feel and hear it with the same magnitude as if you were braking.