No OD when it's cold? Is this normal?

[n2o4vho]

My 93 won't shift into OD when it's cold outside. The colder it gets the longer it holds 3rd gear (like .75-1.25 miles in the morning). Fluid level is up and looks very clean. Any suggestions?

 

[alaskacruiser]

normal- tranny waits until it is up to a certain temp before it allows overdrive engagement

 

[IdahoDoug]

This was done to hasten warmup for emissions reasons. It will not allow the lower rpms of OD engagement until the engine/catalysts are at operating temp.

DougM

 

[sseaman]

i thought only my 4runner did this but now that it is cooling down the LC does it also

 

[IdahoDoug]

It was a standard Toyota thing for a long time. Dunno if the new ones do it.

DougM

 

[Desertmaster]

Or you can change your coolant temp sensor if it has not been replaced before, it might not be sending the correct signal when the coolant fluid has warmed up (Toyota transmissions do not normally shift properly until the coolant temp has reached a specified temperature).

Al