Q: My car jerks when decelerating from what seems to be 4th gear to 3rd.

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I just bought this car and when I slow down from 35 mph to about 30, the car will jerk into gear. It is an automatic transmission. I took it to a shop and they said the transmission fluid levels were fine. Is my transmission messed up? What kind of damage can I expect here?

My car has 112000 miles.
My car has an automatic transmission.

You need to have the codes scanned by a professional with a scan tool for the transmission computer. The codes may give you an indication if the sensor is not performing correctly. If it is not a sensor malfunctioning (like a speed sensor), then you likely have an internal issue in the valve body of the transmission. For that, you will need to see a transmission specialist.

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