My pedal has become very "tippy," meaning that when I barely touch it while crusing, it seems to kick or buck a little more than it should. Same when I let off, it's kind of choppy deceleration for a second, not smooth and linear.

Also having a high-idle issue while in neutral. Engine and trans vacuum lines have been checked and replaced, no difference. If anything, worse.

__________________
former: 83 300D, 97 C230, 93 400E

current: 08 C300 Luxury , 92 500SL