I've got a '93 Toyota SR5, V6, automatic, 4x4. 78,000 original miles.
The transmission will not stay in overdrive, in fact at times it will not shift up at all. I took it to Toyota in Dickinson, ND. They say it is fine, I left and it is doing the same thing. I don't know what to do. Any suggestions or advice would be appreciated.

 

Check the fluid level. The last time I had a flush done, they overfilled the fluid and my truck wouldn't go into overdrive. I let out about a pint and it was fine. However, when cold (40 degree F or lower) mine won't go into overdrive until it warms up for 5-10 minutes.

My transmission was like that from 100,000 miles until it blew at about 200,000. Hope that's some consolation.

 

i personally never had issues with my auto in my 88 runner.

here's a good thread on these transmissions.

http://www.pirate4x4.com/forum/toyot...sues-faqs.html

 

Thanks to both for the input.
Was low on fluid, topped it up, still not helping.
Is always less than 40 here right now( North Dakota ) always let it warm up before driving, so I am still checking. Thanks again.