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Could be a failed engine coolant temperature sensor.
Easy enough to replace and not too expensive.
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∙ 15y ago
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Can the thermostat be bad if the heater doesn't work?
If you are not getting heated air blowing from the heater core and your engine coolant temperature gauge is showing LOW or below normal , ( then YES , IT'S POSSIBLE that your engine cooling thermostat is sticking open )
How do you fix the heat in a 94 Chevy S-10?
add water to the radiator. believe that. if there is no water flowing through the engine, your heater will only blow cold air. if there is no water flowing through the engine and your heater is only blowing cold air, and not HEATING, your heater core is probably going out or will be soon. most people believe that if you have no water in the engine then your temperature gauge will run hot and you will know that you are overheating the engine. WRONG! your temp gauge only measures WATER temp. But if there is no water to measure, there is no temperature rise showing on the dashboard gauge. if you have NO WATER in the engine you can seriously overheat your engine and not know it because the gauge is not getting any hotter than usual (sometimes your gauge will even read cooler than usual).
Temperature gauge not working on Vauxhall corsa?
Possible causes of gauge not working. Faulty gauge Blown fuse. Open circuit in wiring to the gauge. Temprature transmitter in engine faulty. ( most probably the actual fault ) Lack of coolant in the engine.
Your check engine light came on and the code was coolant temperature too low but the gauge was showing between 170 and 180 on 2003 trailblazer?
The gauge should be showing a minimum 195 with engine warmed up. I would start with replacing the thermostat.
What is wrong if a 96 Contour with a 2.0 Liter engine temp gauge is showing the engine heating up after 5 minutes but the heater is blowing cool air?
You need to add water to the radiator, the water level is too low and it can not cool the engine. The heater does not have enough water to heat to blow hot air. Add water now!first check your coolant/antifreeze if it does actually have heat after normal driving maybe 15 minutes it could possibly be your gauge ANSWER Actually, this problem occurs when the water pump has either failed or the belt to the water pump has separated, usually because the pulley on the water pump has disintegrated. Coolant flows through the heater core which provides hot air to the cabin, so when the water pump isn't working, the heater will blow cold air while at the same time the engine will overheat.
The engine temperature gauge isn't working so how do you fix it?
It could be a faulty gauge, a faulty sensor, or a wiring problem. What engine do you have in what year car?
Your 1980 Toyota truck keeps blowing fuses the gauge fuse which keeps your gauge dash lights and heater from working what could be your proplem?
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing
Temp gauge not working trying to locate sensor location in 1997 Mazda b2300?
Try heater hoses.
If a coolant temp gauge is not working will it cause damage to your engine?
An inoperative temperature gauge will not alter how an engine runs, but the operator will not know if the water temperature has risen above normal without a properly working guage.
Why has the temperature gauge in your 92 Tempo stopped working?
It is possible that the temperature gauge has stopped working in a 1992 Tempo due to a blown fuse. It is also possible that the temperature gauge stopped working do to the temperature sensor in the engine having a short.
What runs the temperature gauge in a 1993 Dodge Intrepid Gauge not working but fan is and check engine light is on.?
try replacing the thermostat
Why does temperate gauge reduce when heater is turned on in 1997 Cadillac deville?
This is actually common for most cars. The reason is that the heater pulls heat away from the engine into the car itself.
