Heater not blowing hot air

Tiny
SHAWNB2300
  • MEMBER
  • 1994 MAZDA B2300
  • 4 CYL
  • 2WD
  • MANUAL
  • 217,000 MILES
Okay, so my AC works great. But it's getting cold out so I turn my heater on an it blows cold. I changed the thermostat flushed radiator blew water threw the heater coil and still no heat. Can someone give me a reason it's not working please? Or some advice?
Sunday, November 10th, 2019 AT 5:52 AM

1 Reply

Tiny
MASTERWRENCH
  • MECHANIC
  • 258 POSTS
I would start by checking the temperature control cable. The temperature control lever on your dash is connected to the temperature control door on the HVAC (Heating Ventilation Air Conditioning) housing by a cable, similar to what's on a bicycle. Take a look at the attached adjustment procedure which includes a diagram of the cables and their routing. When you turn the temperature control lever/knob, you should see the cable moving the door under the dash. My guess is the cable has come loose from either the control end or the door end.

Let us know what you find!
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Sunday, November 10th, 2019 AT 6:02 AM

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