mazda1995 929 cooling system seems to have a leak , is this system controlled by sensors or pressure,and what r some problems this model has had in the cooling system

all cooling systems a run by pressure if your talking about engine coolant. but they also have sensors.

Check on line for recalls. Mabye that will help you out.

if you have a leak, it's a sealing problem, nothing to do with sensors. you'll have to find where the leak is.check exhayst for white smoke or oder, check oil for signs of coolant mix and with hot engin look for drips or wet spots on engin, rad., hoses, under dash and coolant bottel.

your coolant system gets pressurized due to the temperature increased by the engine runnning,the water pump circulates the coolant to be cooled by the radiator,if you have a leak you will need to find exactlly where the leak is and fix the leak.