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Re: 1998 Pontiac sunfire lost of coolant
You should look good around the radiator while the car is running for a while. then check the bottom of the overfill tank. If you can not find a leak ther then you can look at the hoses. dry everything up first let the car run to pressurize the radiator. I hope this helps
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You may have a problem with the engine temp sensor or the wiring. The fan would come on if the computer lost the signal from the sensor rather than the sensor failing because of the fan. Low coolant is another possible cause.
A thermostat that does not open and close would cause these very symptoms. Since it does not allow coolant to flow through the system, it will make the engine overheat. Since it won't allow the "heated" coolant to pass by your fan, the heat will continually blow cold air.
Stop driving the car immediately, becuase the next step will be some blown gaskets - especially head gasket. Other possible reasons can be as follows:-- It could be just low on coolant.
if it is then add coolant...
with low coolant the water pump can not move enough coolant to supply hot coolant to the heating system . also if its low the motor will over heat fast..... If the system is full then you may have other problems.. such as
1) bad thermostat
2) bad radiator cap ( not holding pressure so it will leak coolant)
3) blown head gasket .
4) bad heater core (leaking coolant out.. check the floor board under the dash on the passenger side.)
5) bad hose or clamp. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.
It is probably the same problem, you need to check the coolant level in the reservoir if it is full, then you need to check the coolant in the radiator. Make sure that you don't open it while it's hot, It will get you. You can also bring your car to advance auto or autozone, or most any other parts store and they will tell you why your check engine light is on, for free.