How do you clean out a heater box on a dodge sx (neon) 2005?
you can clean the drain tube by just getting under the car with a piece of wire and run it through the drain tube and clean it out that way,but to clean th heater box completely out and get all of the old debris that might be in it you have to take it out and that’s a big job,id try taking the wire to it and see if i could open the drain up on it,it will look like a small rubber tube coming out of the firewall on the passengers side about near the bottom if you look up from the bottom of the car you will see it,be careful and good luck with it.