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verry intermintate shifts.i changed the mass air sensor.and worked for awhile.Now i think its the TCM mileage @  119 k. first really problem with the car? BUT A THOUSAND DOLLARS TO FIX !!! Must be a better way.....
Vehicle: 06 mazda '3' S 2.3 liter auto trans.

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You have to match the part number on the TCM , depending on where you get the TCM and if the TCM is updated and  programed into it. You would not need to reprogram Just make sure the part number match

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