Heater not working

[Mike Sebastionelli]

I found this forum while searching the internet for a solution to my sport tracs ailment. Maybe someone here can help. I believe the heater in my 2001 went out. I was only working on high for a week, then it quit all togethor however I can still feel alittle heat coming from the defrost vents up at the windshield. I replaced the fan switch, the resistor and checked the fuses. Any ideas? Oh yea and sometimes it will just magically come on by itself after I have been driving for awhile. Weird....:banghead:

 

[EddieS'04]

Check the blend door. Passenger floor board. Vaccum hose may have come off. Or the vaccum motor diaphram failure. The blend door may have a broken shaft connection.

 

[Mike Sebastionelli]

where it that vacuum hose located that may have come disconnected?

 

[EddieS'04]

up behind the dash paseger side. Should be able to see it from below.

 

[Todd Z]

When you say comes on, do you hear the fan running ??? Sounds like a bad wire some where..



Todd Z

 

[Mike Sebastionelli]

for example I will leave the fan switch on high, warm air will come out of the defrost vents but not strong...as if it was on low. I will drive around and then all of a sudden the fan will kick on and be blowing on high.

 

[Art Garcia]

since were on the topic. my A/C and heat wont come on what so ever on speed 4.

will work fine on 1, 2, 3. could i simply need to replace the whole climate control? or is it

something else?