Devon300zx

I have a 88 t2 and I started to use my heat since it's getting cold and I used it for a week with no problems , heat was hot and it recently stopped working now it just blows air, my air conditioner still works, anyone know why my heat no longer works?

RotaryEvolution

iTrader: (30)

plugged heater core
jammed blend door stepper motor
faulty HVAC control head


i would start by seeing if the heater hose is warming up, if it stays cold or only slightly warm then the core may be plugged.

djSL

iTrader: (5)

^this. if I the hose isn't hot, get some clear tubing that will fit over the heater core outlets, attach a garden hose to the "out" port, and have the other tube over the "in" port drain into a bucket. Turn your hose on low pressure and watch all the crap fly out of the heater core.

This method cleared out 2 obnoxiously clogged vw heater cores all one rx7 core.