Can shift solenoid on 2004 Mazda MPV be replaced individually

It sounds like your transmission is either not shifting down to first gear, or the lock up in the converter is not releasing.

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when u changed the fluid was it dark /brownish and smelt burnt and was their filings or shavings on the magnet in pan if so more than likely your transmission may be fried---a bad vacuum that would cause shifting problems would also cause the truck to run rough and or stall

Here is what the service manual says about the EPC solenoid, the processor looks at allot of different inputs to command the solenoids, such as Throttle Position Sensor, Vehicle Speed Sensors, Transmission Range Sensor and RPM signal, The PCM controls the shift patterns for the transmission. Electronic Pressure Control (EPC) Solenoid
The electronic pressure control (EPC) solenoid is located on the main control valve body and is controlled by the PCM. The EPC controls line pressure used to apply and release clutches and bands in the transmission.
The 2-3 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 2-3 shift solenoid activates the 2-3 shift valve which controls the automatic shifting between second and third gear. Second gear is established when the 2-3 shift solenoid is switched on. The 2-3 shift solenoid is switched off when vehicle speed increases and requires a second to third gear upshift.
The 3-4 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 3-4 shift solenoid activates the 3-4 shift valve which controls the automatic shifting between third and fourth gear. Third gear is established when the 3-4 solenoid is switched off. The 3-4 shift solenoid is switched on when vehicle speed increases and requires a third to fourth gear upshift.

MPV shift shock. This will be fix by having transmission control module reprogrammed at the dealership.

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Probable culprit would be the electric solenoid that releases the gear shift linkage when you apply the brake pedal. Since it's electric, a dead battery will cause the same result. Check to see if your brake lights are working. If not try replacing your brake light switch as this also gets power to the above mentioned solenoid.

This is a safety feature to prevent children from accidentally putting a car in gear.

Good luck!

well,whoever did the transmission needs to look at it again.It sounds like a solenoid problem internally in the transmission.or a plug,wiring,or vacuum leak

SOUNDS LIKE AIR BYPASS VALVE STUCK

2003 lincoln ls harsh reverse...transmission has been rebuilt with new solenoid pack & taken to dealer to reprogram pcm!!!!!!!! wat else is left

you have a valve body problem, some of the speed sonsor controls are malfunctioning... need to get into the valve body... check fluid condition for dirty and burned condition...

This is a known issue with certain '03 and '04 MPV transmissions; my 2003 had the same problem. There is a Mazda technical service bulletin about this - 05-003/004 (Shift Shock). You need to take the van to a qualified shop and have them flash the transmission control module (TCM) with new firmware.

I had this done. It did not completely fix the problem but it did reduce its occurrence.