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Usually this is not the case. It looks like a bad thermostat, because no way the coolant is not getting hot, but a rusted up thermostat would not open for the coolant to circulate. If I were you I will change the thermostat first than check the water pump.
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Why is your 2000 Saturn sl1 heater not getting hot enough?
If you are certain that you have sufficient coolant, and the heater is not warming up adequately, check the thermostat and/or water pump. If the thermostat is staying open the engine coolant will not heat up enough to provide heat inside the passenger cabin.
What could cause your heater to not work even though you have proper coolant levels?
The thermostat may be stuck in the open position, so that the water is not getting hot enough.
How do you know if your thermostat is shot?
If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.
Why 1994 dodge ram cargo van only blows warm heat at 40 miles per hour and won't heat idling?
Low coolant or stuck open thermostat.Low coolant or stuck open thermostat.
When coolant temp is low what needs to be done?
Replace the coolant thermostat. It is probably stuck in the open position.
What direction does a thermostat point in a 2000 camry?
Spring side is always down to maintain constant contact with coolant-otherwise it would not open soon enough.
Your car has overheated twice in the past couple days - so hot the coolant was boilingwhat could cause the coolant to boil?
Thermostat fail to open. Waterpump is on the deathbed. None, or not enough Anti-freeze in radiator.
Why does the engine temp go down after warming up?
When you start the engine, the thermostat is closed. After the coolant warms up the thermostat begins to open up allowing coolant to flow thru the raditor. When first started the temp will go a little past what the thermostat is set to open at. After the water begins to flow thru the radiator, the temp will fall to whatever the thermostat is set at. The thermostat holds the coolant in the engine until it warms up. As soon as the engine is warm, the thermostat opens allowing cold coolant outside the engine to mix with warm coolant. The temp drops, the thermostat closes again, until all the coolant is warm.
Why is there no heat in a 2000 mercury cougar after changing the themostat?
If this happened immediately after changing the thermostat, then the most likely problem is the thermostat was installed backwards.The spring side of the thermostat faces the engine. It's the spring that is reacting to the coolant temperature and driving the valve to open/close.When the thermostat cannot open, that prevents any coolant from ever getting to the heater core. Thus, you shiver a lot!Pop it out, flip it over and you should be all sorts of warm and cozy.
Why do you not heat in a 2000 Mercury Sable after changing the thermostat?
If this happened immediately after changing the thermostat, then the most likely problem is the thermostat was installed backwards.The spring side of the thermostat faces the engine. It's the spring that is reacting to the coolant temperature and driving the valve to open/close.When the thermostat cannot open, that prevents any coolant from ever getting to the heater core. Thus, you shiver a lot!Pop it out, flip it over and you should be all sorts of warm and cozy.See "Related Questions" below for more
What happens to the motor when you put in a thermostat backwards?
It will probably overheat. answer= thermostat will not open and will prevent the flow of coolant . which will in turn do damage to your engine
Does the thermostat control the heat in your car?
No, the thermostat controls the temperature of the engine coolant. As long as the coolant temperature is below the thermostat set-point, the thermostat remains closed. Once the temperature arrives at the set-point, the thermostat starts to open, sending heated coolant through the radiator. The radiator then cools the heated engine coolant and the water pump forces the coolant back through the engine. The heater control valve allows more or less of the engine coolant through the heater core. Since the coolant should be very near the set-point temperature of the thermostat, you should be getting hot water through the heater core to warm the inside of the vehicle. The engine coolant is there to keep the engine from melting down or from breaking metal parts and burnng off the oil. It just happens that the heated coolant is useful to warm the inside of the vehicle.
