transmission not going into overdrive when car is warm (10 mins driving) when its cold its works half the times.
any ideas?
thanx

l own a repair shop,try having it serviced real good,and tell the shop that is doing it to look for a loose wire in side the transmission, around the solenoid area ,they maybe able to repair this one really cheap,i think all its needs is a good basic maintenance on it,and that may repair it,good luck,i hope this help,s.

It sounds like the overdrive solenoid is burned out. Normally when those go bad they will not work when they heat up as the expansion causes the contacts to separate. Which is why when it gets cold it will work sometimes as the contacts fall back together.