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05-21-2017, 07:38 PM
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#5 |
 Drives: 2015 yaris L Join Date: Jun 2016
Location: Indiana
Posts: 77
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Could be hot water valve to your heater core letting water circulate, valve not closed all the way, or a bad valve, I've had heater valves that were closed but would still let water through. Touch your heater hoses at the firewall, if both hoses are hot, it's the heater valve.
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