o/d flashing

Hi All, I'm getting O/D light flashing Service Engine Light on P1780 & P0775 error codes New to me Mechanic wants to install Rebuilt Trans for $2100.00 CAD (in Canada) Question: Could this be a Transmission Control Switch or other Sensor? Please help! Automatic, V6, 4.0

Hello, I just purchased a 2002 FORD Explorer XLT 4.0 V6 and I think with the 5R55W tranny. They said that this is the 3rd tranny. The OG was replaced, then the replacement was replaced. My question is that the O/D OFF light is blinking but there is no CEL. I hear there should be a code but...

Okay, so I've tried and tried to find someone describing the same issues I'm dealing with and I'm giving up on that and reaching out directly. I have a 98 explorer XLT 4.0 automatic. It started off with the o/d off light flashing once in a great while, then it gradually made an appearance more...

After a lot of discussion about getting to the tranny pan on my 99 4.0LSOHC I was finally able to get it off and change the filter and 5 qts of fluid that came out. Now if I drive it about 2-3 miles the o/d light starts flashing. It seems to shift ok except the downshift when slowing down from...