Mechanics

HEATER AND AIR CONDITIONING.

1997 Honda Accord • 212,000 miles

My heater and Air Conditioning blow out normal air, it does not change from hot or cold.
I have tried to re-charge the Air Conditioner but I think, I have a leak in the pipes. I have checked the fuses. My thermostat is just on the open position though, so I don't know if that has something to do with the heater and air not working correctly. I don't know what else to do, winter is coming up SOON and if I don't get my heater working then, I will not be able to drive, because I will not be able to defrost my windows and I will not be able to see! Please help me, if you can?
Thank you so much for you time!
Signed,
Leia Ginunas
Avatar
Lginunas
October 9, 2013.




It sounds like you have a blend door issue. This is the door that seperates your hot air, and your cold air. However before condemning it and pulling out the dash, check your heater hoses to the heater core. There are 2, and they are the only coolant hoses that go through the firewall. Get your engine up to running temp, then feel these heater hoses. One is feed, the other is return. Both should be hot. Lets get you heat for the winter, before we worry about a/c

Madmike1735
Oct 9, 2013.
I am pretty sure I can hear the door that switches the heat to cold air going back and forth. Does the Thermostat have anything to do with your heater?
AD

Tiny
Lginunas
Nov 2, 2013.
Yes the t. Stat could cause no heat. Did you do what I suggested in my last reply?

Madmike1735
Nov 2, 2013.
YES, somewhat. I checked the blend door, it is working just fine, and I didn't even have to pul apart the dash, the hoses look good, but I have no clue what or where the heater core is! Can you direct me to find it please?

Tiny
Lginunas
Nov 2, 2013.
Heater core is in the hvac box located inside your dash. Dont worry about that right now. You need to check the hoses to it. There are 2. They go through the firewall. Big black hoses, one sits above the other. You will know when you see them. One feeds coolant to the heatercore, the other acts as a return. Both need to be hot.

Madmike1735
Nov 2, 2013.
I only know of one and it did not get hot at all. It was a small hose located under-ish the thermostat.

Tiny
Lginunas
Nov 3, 2013.
Sounds like the hose you found is the t. Stat bypass hose. The heater core hoses will be located out of the firewall. There will be 2.

Madmike1735
Nov 3, 2013.
I know for sure it is not the t. Stat hose cause I just changed my t. Stat and had to take that hose off. The hose I am talking about is underneath the t. Stat hose and housing.

Tiny
Lginunas
Nov 3, 2013.
Do you know what that hose is, that is under the t. Stat hose?

Tiny
Lginunas
Nov 4, 2013.
What is the firewall and where is it located?

Tiny
Lginunas
Nov 4, 2013.

AD