Nice car, excellent vintage year. Only thing that comes to mind is an anecdote about my two w123 cars during trans fluid service. When the fluid was low, i.e. not yet topped off, the trans would make clicking noises. After topping off, it went away.

Don't know much else except that you ought to keep the car on ice until someone can point you in the right direction.

Hopefully it is something simple. YES !!!

Recheck the fluid level, maybe the torque converter did not fill all the way etc...

keep us posted.. try searching the archives based on your trans model name or number.

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1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
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1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD