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What causes car to show hot 1 min then show cold the next shows hot heater dosent work and car over heats have changed water pump and thermostat?
Wiki User
∙ 16y ago
You have air trapped in the cooling system, which must be bled out. Park the car on an incline or jack up the front of the car. Remove the radiator car and start the engine with the heater control set to hot. Make sure the radiator is full. Watch the radiator until you see no more air escaping. Keep it full at all times. Also look for a bleeder valve on the upper portion of the cooling system. Usually found near the thermostat housing.
Wiki User
∙ 16y ago
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