Hard to shift into 3rd gear
Probable cause(s)
Worn or incorrect MTF.
3rd synchro ring defective.
3rd/4th synchro sleeve and hub defective.
3rd gear defective.
Change lever assembly defective.
Diagnostic procedure
Check and/or replace the MTF.
Check the 3rd synchro ring.
Check the 3rd/4th synchro sleeve and hub.
Check 3rd gear.
Check the change lever assembly.