stick your head behind the center console from the passenger side and look up. the cable probably popped off. it controls the air mixture flap and is the reason its not blowing hot air thru the heater core.
Don't IM me your TECHNICAL question. Start a thread, I'll answer there.
I am not a moderator, nor do I need to provide you technical advice.
im not sure if this thread is dead but its worth a shot.
i replace my thermostat a few months ago when it was still warm out. not its cold -10 and my temperature guage doesnt work right. it will start to get warm then fall back down. and if my car is just sitting there running it blows cold air. but if you give it some gas it will start to blow warm.
ok I wanted to add something here... I am having this "no-heat" issue in my CRX, the blower and controls work just fine.
I checked the valve under the hood... good... I checked the valve on the side of the heater box under the dash, still good. I opened both valves and still no heat. The inlet and Outlet hoses are both warm (pretty much same temp).
I am going to remove the dash and completely inspect everything.
The Honda workshop manual says if your blower works and your not getting heat, that it could be a possibility of a few things
- Cloggged heater duct
- Clogged blower outlet
- Clogged heater valve
- Faulty air mix door
- Air Mix cable adjustment
- Faulty thermostat
OK, now I feel silly... said I checked the valves, but I only checked them from the cable, both seemed to open and close properly. I removed the header duct that connects the blower to the heater, to find a small Blue Point wrench that was blocking the door from fully opening to the hot air. I removed the wrench and re-adjusted the cable. Heat works perfect now.
Now this is something that I'm sure is very rare to happen... However, if you have already checked everything external and you still are stumped, be sure to have a look here, you never know how the work was done on your car before you had it... after all it was a 5/16 wrench
You can reach in and feel the flap door right there, when the Air Mix door is all the way towards the firewall, it should blow cold. When the mix door is all the way towards the center console it should be fully closed, which will send all of the air through the heater core.
The air mix door needs to be fully shut!, a tiny wrench allowed it to be open about half an inch and that was enough where I wasn't getting heat.
My problem seems to be more electrical than anything else but I seem to only have my heat actually work when the key is in between the 1-2 position of the ignition switch..... When i start my car i have absolutely nothing working heat wise but when i put the key between the 1-2 position my heat starts blowing.... Any ideas as to why it wont work with the car in the run position but works while in between 1-2!!!!!!
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