i know this is a problem-- I think BUT I will be on the Interstate in 4th or 5th gear. I will 80%-100% floor it and the car will JUMP BACK TO SECOND OR THIRD GEAR! I will see the tach fly like the speed of light and then BOOM - the car goes back to fifth gear within two seconds of jumping to second (or third) gear


--ALSO my car will shake like the worst loaded washer in human history, when statred after a few days of not driving--(this violent shaking lasts for about ten seconds before going away)

I appreciate any advice

 

something must be wrong with the TIP

 

It's late so excuse me if I'm off base? But what you describe seems to me like it's simply downshifting via "kickdown" so that it accelerates harder/faster no. Does it proceed to shift through gears back up to fifth properly? It won't take long and will be over in a flash but that's how it should be..