Question about 1996 Toyota Corolla

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Reopen heater valve

I think the mechanic who repaired my car shut off the valve on the heater core and now I have no heat. I need to reopen this but I don't know how to access the valve. I have a 1996 Toyota Corolla.

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  • jam72264 Feb 24, 2009

    I originally had a coolant leak and that was repaired. As I was driving home I turned the heat on and noticed that it was blowing cold air. In a previous inquiry I was told that the mechanic probably shut off the valve on the heater core to repair the original problem.

    That is why I am looking for the valve to see if that is what the problem is.


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I would doubt this very much,you dont say what the mechanic was doing in the first place.if the mechanic was working at the water/heater system then i would say its an air lock in the system a simple air bleed fix this.adrian

Posted on Feb 24, 2009

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the inlet to your heater core is dead center of your firewall and 7 inches down. There will be two hoses. The inlet hose is on the right as your facing it. About 8 to 10 inches before the firewall as you follow the inlet hose back towards the engine, there is an inline valve with two wires attached to the top. This valve opens when heat is called for, and allows flow through the heater core. This valve is known for sticking shut. To check it, get the engine warm, turn on your heater, and feel the hose on bolth sides of the inline valve. If its hot on bolth sides you're valves ok. You can also check your flow through your heater core by feeling the outlet hose to the left of the inlet hose. If thats hot your heater core is most likely ok. I have the same car and have a problem with the heater not getting hot. My heater core checks out ok. I think the problem is with the blendor door not directing airflow through the heater core. GOOD TIMES!!!

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