What fluid Mazda B3000 automatic

Question edited to what I think you thought you were saying plus 'mazada' to Mazda.

No one has tried it with a Mazda, but a Ford Ranger 3.0 transmission will fit.

https://www.google.com/search?q=2000+Ford+Explorer+4.0+motor.+Will+a+transmission+out+of+Mazda+B3000+fit

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did you check fluid level -color and smell [burnt] low or burnt fluid can cause these problems you can try flush and a filter change ---unless you have training in transmissions anything other than fluid change send to a mech ---trans dont have a fuel pump---

You must remove the transmission pan and replace the filter inside attached to the valve body. Refill to just under the full line, run engine until transmission fluid is hot and then top off the transmission fluid, DO NOT OVERFILL!!

Do you like the car and want to keep it? Rebuild the transmission before it gets worse(and it will). If not , time to get rid of it.

Shift solenoid is sticking might be just worn out or dirty fluid. Most likely worn out.

.One of the most common causes of a slipping transmission is a low automatic transmission fluid level, also a dirty and/or clogged automatic transmission filter can impede the normal flow of automatic transmission fluid throughout an automatic transmission and cause the transmission to slip. Adequate, unobstructed transmission fluid flow is necessary for the optimal operation and function of an automatic transmission, including the function of the transmission bands and gears, two transmission components that routinely cause transmission slippage.Another cause would be faulty torque converter action and maladjusted transmission band.

might be fluid but here are some helpful websites, Good Luck Tim:

http://www.automotive-clutches.com/basic_clutch_info.html
http://www.aa1car.com/library/2003/bf50332.htm

Just like any other car/truck, check tranny fluid while engine is hot and idling and check the transmission dipstick. Add fluid as needed into the same hole as the dipstick using a funnel. window.onbeforeunload = function() {}

Automatic and standard transmission needs fluid change every 24 months. On automatic transmissions, the gasket needs to be changed as well as the filter. On standard transmission there is a drain plug that can be loosened up, and refilled through the refill hole. Standard transmission use gear oil, while automatic transmission uses automatic transmission fluid.