2007 Honda Accord V6 (180,000 miles) the transmission shifts perfectly when driving, when slowing down and coming to stop the down shfting around 30 miles hour the shift are a little rough.

I changed the transmission fliud did a full flush (3 times),

Can any one shed some light on what is causing this ?

 

Were the rough downshifts happening before the 3xdrain/refills?

 

Yes, they where

 

Transmissions are difficult to troubleshoot, so I have some basic questions to ask.

What did the old transmission fluid look like when you drained it? Any signs of metal shavings?

Are you checking the fluid level with the transmission running or car shut off?

Was any work done on the car not long before you noticed the downshifting issue?

Is the D or D4 light flashing when driving? Have you checked for engine/transmission codes?

 

Fluid had good color and no metal shavings

Checking the tranmission fluid when the car is off

No work done on the car

No flashing lights, no codes

I just saw something about changing the transmission filter and maybe cleaning out shift solenoid ??

 

I'm pretty sure changing the transmission filter requires disassembling the transmission. It is not a normal service item.

Cleaning the solenoid screens and solenoids is a good next step.