Hard shifting from 4 to 3?

Hi guys, I am having problems with my Tundra 2007 5.7 4x4. I am having a very hard down shift from 4 to 3 speed. Has anyone had a similar problem that can help me with it?

 

Can you be more specific? I know that the torque converter sometimes has issues with the clutch inside it releasing. Does it do it all the time or just on occasion? Does it do it only under light deceleration? Have you tried using the manual shifter to see if it still does it? Have you had any work done to your transmission (fluid change) recently?

 

Hi my friend and thanks for the reply, It does it some times, I have tried it in manual mode and also does it. I bought this truck last week and it has 164k. Really don’t know if it has been repair or something. But in the only speed that does it, it’s when it goes down from 4 to 3 speed in manual mode or automatic.

 

There's some information about the valve body in the transmission on the internet. It's possible that a valve is going bad. From the way it sounds there's a modification that can be done to help improve reliability. Just the other day someone else had an issue with their transmission and a couple videos were posted. The valve body can be removed without pulling the transmission. The two issues I can see is that if your truck has spent time in the salt the bolts for the oil pan may be rusty and snap when trying to remove them. Secondly there's a couple parts that will fall out when you remove the valve body. I would want to drop it down very slowly so I could see what parts go in which hole and in what order. Maybe either using a hydraulic jack to lower it down slowly or have a second person with you as you remove it. You can buy the solenoids of you could send the valve body to a place that will service it and do the modification for you.