Railroad9 Posted October 25, 2015 Share Posted October 25, 2015 I have no heat inside cab ,changed thermostateand coolant.both hoes coming out of fierwall are hot ,but blower is only blowing coolair.what is the problem Link to comment Share on other sites More sharing options...
Fairtax4me Posted October 25, 2015 Share Posted October 25, 2015 Air mixing flap is broken or stuck, or the cable has fallen off. Look under the dash, passenger side, and slide the hot/cold lever/knob back and forth and you should see a cable move. Make sure it's attached to the lever for the mix flap. Lever is usually white plastic. If the cable doesn't move, its broken or disconected from back of the HVAC control head. If cable does move, disconnect it and move the lever by hand. It should only move about 1/4 turn, and you should hear the flap as it slides and stops against the inside of the case. If it moves more than that or feels like its very loose, the flap is broken inside. 2 Link to comment Share on other sites More sharing options...
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