1995 C280 sluggish

[nazrat]

Our 1995 C280 had a water pump and a transmission cable replaced yesterday at an independent Mercedes shop. It drove fine on the way home (30 mi, mostly hiway), and this morning to work (5 mi, mostly stop and go traffic). At noon we ran some errands and it would not easily come up to speed (acceleration delay similar to a 126 300sd), but once at 30 mph or so seemed to behave normally. Very light accelerator pedal pressure behaved normally, but any attempt at quick acceleration produced sluggish performance under 30 mph. Any thoughts?

We're going to see if it's drive-able back to the shop in the morning.

-Tad