problem in transmission on 2004 Porsche Cayenne

When I drive smoothly transmission seems to have no problem with upshifting or downshifting. Only when I press the gas pedal to accelerate the speed, transmission from the 3rd gear stucks, and before it shiftes to the 4th makes this boom noise and shackes the car...

Asked by for the 2004 Porsche Cayenne
1 answer 1 comment
Have a good Porsche shop look at this, it sounds like the 3-4 shift solenoid or even an internal mechanical 3-4 shift component, speed sensor etc, is defective.

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Thanks, I did. Problem is that Im in Ukraine now, and only Porsche official shop is in Kyiv. I called them and reported the problem. What they say is that- they can check the transmission, but no guaranties that computer will read the problem. They also recommended oil change and/or drive unless the broblem is persistant.