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Thermostat has to open to allow fluid flow. The supply hose to the heater core is located before the thermostat, forcing the coolant through the core even as the coolant is heating up.
Water pump has to work properly to cause fluid to flow.
Temperature control (lever) has to operate properly to allow fluid flow.
System must not be air-bound to allow fluid flow
Heater core must not be plugged
What else can I help you with?
What lets hot water into the heater core on a 1993 Pontiac Sunbird?
The water pump pushes the coolant through the engine block and head(s) then into the heater core.
1994 Pontiac Sunbird 2.0 engine When the car is warning up it has heat but after you drive it for mile you lose heat and it blow cold air have replaced the water pump and thermostat?
check the heater core
What is required to remove water pump from 1994 Pontiac sunbird?
tools and knowledge (or a manual)
Where is your water pump on your 1994 Pontiac sunbird?
if its a 4 cylinder, its located inside the timing case.
How do you convert hot water from a boiler to water heater?
== == It is accomplished by adding an indirect fired water heater and controls.
Is the fuel pump relay switch in the trunk of a 1994 Pontiac Sunbird?
The fuel relay on a sunbird in under the hood on the left side just by the water over flow tank.
Why doesn't your Pontiac gran prix heater produce hot air?
Check: Heater controls, doors & door actuators, thermostat could be stuck open, heater core possibly plugged, might have a water shut off valve that's not working (depending on what year).
Replacing heater core on 1997 Pontiac Bonneville?
Begin by training the water from your 1997 Pontiac Bonneville cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
How can I turn off my electric water heater?
To turn off your electric water heater, locate the circuit breaker that controls the water heater and switch it to the "off" position. This will cut off power to the water heater and stop it from heating water.
Why is your Pontiac firebird leaking water on the front floorboards?
heater core is shot...
Where is the water pump located on a 1992 Pontiac Sunbird?
Look at the belt on the engine, then look at the pulleys. The water pump is behind the pulley without any groves in the pulley.
Is there a water gasket between the exhaust and engine block on a 1992 Pontiac sunbird 2.0?
No. There would be a gasket between the head and the block, though.
