QUESTIONS!!!

HISSIN50 said:

I'd have postulated it was two separate issues. A chattering clutch occurs as you engage or disengage it.

The bucking upon deceleration (dashpot) is likely a tune/sensor issue. Ditto for stabbing the gas - those are transient maneuvers which actually have a fair amount of code to make happen smooth.

If your clutch is chattering, as you let the pedal out, the car can shake (it feels like if you accidentally put it in 3rd gear and try to leave from a light). That should be separate from what you describe unless your clutch is simply slipping, in which case you'd know it and you'd have issues across the board (WOT issues, etc).

Where is the point of engagement (near the top or bottom of the pedal travel)? If it's near the bottom, that can explain the thud while shifting.

I would start with codes - see if your TPS took a dump or something (TPS is huge with transient maneuvers).

Good luck.

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HISSIN50 said:

If the chatter occurs at the POE (point of engagement), you might have to remove some glaze. In the old days we'd find an empty stretch of road (I mean a closed road course) and light 'em up................... There's always a chance this will make it worse (we were prepared to replace the clutch anyhow).


If the clutch really is chattering, replacing it and resurfacing the flywheel (or replacing it - when they get hot, they glaze and can crack) is probably the answer.

If you haven't, just keep driving it (heat cycling the clutch). The issue will probably get better or worse in short order. It just depends how bad it is.

MHO.
Good luck.

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