so i have discovered recently that my 01 4runner A340F transmission has been acting up lately. when im driving it just does not want to shift unless i let go of the gas. it will just keep climbing and screaming rpms. loss of power has followed and burning really lean the smell from the exhaust is wayyyy too strong. it will also down shift while going up a hill and start at about 5k rpms when shifts down. when i go wheeling i can barley climb a hill cause of the power lost. if anyone has any answers or has come across this issue before please any help would be great. tired of my yota drinking gas like its water right now. thanks in advance.

 

it doesn't sound like it's a motor problem, so dont know about the lean problem. It defeinitely sounds like the transmission here is struggling to put the power down.

What are your temps like? Any different to normal?

Has the tranny fluid been changed recently?

How many miles on the clock?

 

get it fixed sooner rather than later. It sounds like it could just be lacking fluid at this point. The more the drive it the worse the damage will get.

 

Step one. Pull the trans fluid dispstick out and wipe it on a clean white paper towel. Take a picture and post it. Also smell it and describe the smell. Smell realy bad? Burned smell?

Do that and we will go from there.

 

im having the same problem I replace the tranny but nothing does not want to shift unless i let go of the gas , RPM will climb and screaming . loss of power has anyone found out the problem??