No Go 4 my 2001 traurus transmission

With no previous problems my 2001 Taurus will not go into any gear. 177000k miles Car is in good condition. Changed filter and fluid in pan. Speedometer does not move while in drive.One day it worked fine the next day—nothing. No noise or anything before it quit.

Any ideas?

You should probably have a transmission technician look at it. The problem could just be oil level or manual linkage. I believe that this transmission has a quill that drives the oil pump. If that snaps there will be no line pressure ergo no shift. Otherwise it might be a broken internal part that would require disassembly. If disassembly is required, get a full overhaul at this mileage

JMHO