I have a 2001 mazda mpv 93000 miles. It has been smelling hot but gadgets doesn't move. Checked coolant it was low. Topped it off. Did the thermostat test feeling the radiator hose as the car idled. It didn't get warm and there was no heat coming out of the heater. So heater core or thermostat. Plz don't say heater core.....I am 69 yrs old female with limited income