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Nov 5, 2012 | 03:40 PM

conchstew

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New User

Joined: May 2007

Posts: 18

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heating

HELP!!!!!!!

My heater is only pushing out cool air How do I repair this?

Nov 5, 2012 | 05:17 PM

aquanaut20

Cargo Master

Joined: Aug 2003

Posts: 3,263

Likes: 92

From: BC Canada

Well, that depends!

What is the temperature of the coolant entering the cabin ????

Have you checked the cold air damper in the mixer box (under dash)??... Philip

Nov 5, 2012 | 10:05 PM

steve(ill)

Hotshot

Joined: Jul 2005

Posts: 11,931

Likes: 180

--look at the temp gauge. Is it normal, 1/2 way or too cool... that tells you if thermostat failed.
--feel the 3/4 inch black heater hoses going to and from the firewall. Are they hot after truck runs for 15 minutes ? If not, then heater core might be plugged somewhat and restricting flow.
--play with the heater **** on the dash.. does it move o.k., or feel like its broken ?