Yeh your od is gone. I just had my trans replaced in my 06 for the 4th time doing almost exact same thing as yours except mine was 3rd gear. If i put my car in 3rd gear it would drop to idle untill I got enuf rpms for 2nd gear. For example 55mph 2nd gear at like 3500 rpms. If the car was put in 3rd rpms would drop to idle till I got back up to 3500 rpms for the car to be at the right rpms for the gear (2nd gear). They told me my final drive was out and my 3rd gear clutch was completely burnt up.
