the car starts smoothly but cuts on 2rpm

When I start the engine it starts nicely but wont rev up totaly

The gas pressure has been tested and is ok. The electrical side or circuitry is the one that is not working

what would the estimated cost to fix this problem be

the car has been outside in my yard in the weather and the motor has not been started for five years, and has no battery,but when it was being used it ran perfect,and had no problem

I do have a Mazda MX6 2.5 V6 1997 MODEL. I had to replace my old motor with a import motor exact same as my old one. Ever sinse no results no spark on plugs. I did replace the distrubiter and cranckshaft sensor replaced Icnition rest ECU - stil no results. please help my car is standing now for 8 months

How do you add transmission fluid to a Mazda MX6 1997?