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dave.c ... 1/26/2013
1995 Jeep Grand Cherokee Limited 6 Cyl 4.0L - Engine
new radiator,water pump,thermostat,no heat,temp at 150 for over an hour still no heat
2 Answers
  • Jimm
    Jimm 1/26/2013
    The hot coolant flows from the engine to the heater core through the "inlet" hose. After circulating through the core, the coolant returns to the water pump through the "outlet" or "return" hose. Both the inlet and outlet return hoses should feel hot when the engine is at normal operating temperature and the heater is on.

    1. If the both heater core hoses were cooled, then this vehicle might have an insufficient coolant in the cooling system.
    2. If the heater core inlet hose is hot and the outlet hose is cool, the heater core might be clogged.

    Note: check the radiator coolant level and top it off as needed.
  • charleslong04
    charleslong04 1/26/2013
    like jimm said heater core or if none of your other switches work id go with your control switches itself

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