its cold out side...
 

and my heat doesnt work. I went muding and the next day my heat didnt want to work. 2 days after that it worked again then the next morning it was out again. anyone know whats up its a 1999 ranger xlt

sounds like your heater core is close to being fully plugged up
try a back flush with a pressure washer see it that helps

well i looked up how to flush my heater core and 15 min later my heat works thanks for the idea

your welcome