UPDATE: This is my problem. After changing the thermostat; fan coupling, heater tap and core; and bleeding the system a good couple times my car still blows luke warm from the center vents and center floor to the cooler side. In another thread[/B], [B]there was mention of a valve that was a SIB to prevent the core from exploding installed near the fire wall in line with the heater hoses.
Has anyone ever had problems with this valve being clogged or not working to cause a heating issue in the cabin?
ok I just changed the valve and the small hose was plugged; So I cleaned and changed a spare hose and valve I had and installed it. Bled the system again thoroughly but I am still getting luke warm air.
I found this on another site:
Try checking the thermostat valve between the engine and the firewall. Mine was plugged and not opening all the way which caused me to have symptoms similar to what you are experiencing. This valve will be inline with the heater core inlet hose on the main ports and will have a smaller OD hose coming to it off of the discharge side of the core. The smaller hose is what opens the valve by sensing coolant temperature but if the valve is plugged at that smaller port, the valve will remain closed or partially closed. I simply took it out and put hose barbs in it's place and all my heating issues went away. This could also cause you to have air trapped in the core by not letting full coolant flow thru the core to drive the air out.
I believe this valve was a recall or addition to the vehicle after they were produced. I gather this valve was installed to cut flow to the heater core if the core were to burst in the cabin and prevent scalding of the occupants.
Has anyone ever had problems with this valve being clogged or not working to cause a heating issue in the cabin?
ok I just changed the valve and the small hose was plugged; So I cleaned and changed a spare hose and valve I had and installed it. Bled the system again thoroughly but I am still getting luke warm air.
I found this on another site:
Try checking the thermostat valve between the engine and the firewall. Mine was plugged and not opening all the way which caused me to have symptoms similar to what you are experiencing. This valve will be inline with the heater core inlet hose on the main ports and will have a smaller OD hose coming to it off of the discharge side of the core. The smaller hose is what opens the valve by sensing coolant temperature but if the valve is plugged at that smaller port, the valve will remain closed or partially closed. I simply took it out and put hose barbs in it's place and all my heating issues went away. This could also cause you to have air trapped in the core by not letting full coolant flow thru the core to drive the air out.
I believe this valve was a recall or addition to the vehicle after they were produced. I gather this valve was installed to cut flow to the heater core if the core were to burst in the cabin and prevent scalding of the occupants.
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