What are MIL codes...
 

What are MIL codes PO740 PO1618 PO0101

RE: What are MIL codes...
 

P0740 Generic Torque Converter Clutch Solenoid Circuit
P1618 Volvo Fault in Lead Between AW 50-52 and Motronic 4.3 (MIL Requested)
P0101 Generic Mass or Volume Air Flow Circuit Range/Performance
Found them here.
http://www.iequus.com/support/obd2_definitions.php

Sounds like you have 2 problems there.
Maybe a bad Vacuum leak or mass flow.
The tranny can be many things I would clear the codes and see how fast they come back.