No heat
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Junior User
Joined: Oct 2010
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No heat
So my heater is not working and i have no idea where to go or what to check from here. The things that ive done so far is use a smoke machine to check for leaks in the vacume lines and discovered that the ac/heat vacume control switch was bad. being unable to get one from the auto part store i went to the junk yard and pulled one off another vehicle that looked in really good shape and put it on. this didnt fix the no heat problem. today i replaced the heater core after talking to some people and all deciding that it could be my problem. now it is still not heating like it should but after replacing it i went for a drive and i could tell that it was trying and would blow hot for a few seconds and then go back to cold, and it would do this off and on but overall theres still no heat. does anyone here know what else it could be or know where else i can check to try and get it working right?
Posting Guru
Joined: Jun 2002
Posts: 1,028
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From: Panama City, Fl
First....are you getting hot water flowing thru the heater core.....
Second.....does selecting different air flow positions inside change the air flow....
Third....any hot air flowing anywhere.....floor/defrost/vents....
Second.....does selecting different air flow positions inside change the air flow....
Third....any hot air flowing anywhere.....floor/defrost/vents....
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Junior User
Joined: Oct 2010
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yes the are blows good in all positions defrost, floor and dash vents. i have noticed that if i turn it off for about a minute or so ill get hot air but then it goes right to cold.
Posting Guru
Joined: Jun 2002
Posts: 1,028
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From: Panama City, Fl
Sounds like the blend door is bad. May need a new actuator or possible vac issue there.
Maybe some help here...
http://chrisb.users.superford.org/Br...M_Page_141.jpg
Maybe some help here...
http://chrisb.users.superford.org/Br...M_Page_141.jpg
Thread Starter
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Junior User
Joined: Oct 2010
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Well I fugured it out and now I have heat everything is working as it should I just had a dumb *** moment yesterday and forgot to top off the coolant so I did that this morning and now the heat works good
Post Fiend
Joined: Nov 2011
Posts: 8,908
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From: Algona, Washington
Man i was just thinking that it sounded like the low coolant symptoms, my brothers friend was having the same problem with her car and we topped off her coolant and it worked fine
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Posting Guru
Joined: Jun 2002
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From: Panama City, Fl
Ahhhh.....******* moment.....we all have them. I thought low coolant but you had just replaced the core so.....Glad it is working.
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Junior User
Joined: Oct 2010
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Yeah me too and it happened again today while replacing the rear window motor I was having a hard time getting the new one in the I figured out there was an easier way so I removed to height selector and got it where I could work with it and the new motor went right in. 4 hours of work for nothing.
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Junior User
Joined: Oct 2010
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Yeah it just coolant levels but it seem like I'm going through a lot of coolant I don't have any leaks that I can tell and I'm not seeing or smelling any sighs of it getting into the oil. Kinda stumped on this one