Edmunds Answers


  • karjunkie 01/15/10 8:37 am PST

    If the vehicle that you are working on has a heater control valve, it will be installed in one of the heater core hoses. Not all cars have a heater control valve. Locate the heater core hoses and follow along their lengths. The heater control valve looks like a canister with a vacuum line attached to it.


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