I having a problem with my auto trans. It won't go to overdrive on the highway.I can feel the 3 rd. gear kick in at 40 miles per HR. nothing else.The car has 142 K on it.Around 80 K I changed the trans. fluid. The fuse looks good in the fuse box.I had the trans mount and motor mounts changed 2 mt ago.Can I look for anything ? Like a relay.

91 240 142 k
98 V70 AWD 72 k

Thanks
jpirish

 

This shows where the OD relay is located:
http://cleanflametrap.com/pub_autoOD/

 

What a great help.My problem was the relay.I was looking behind the ash tray.My 240 runs like a new car.

Thank You for the help.

jpirish