you can't reset it, fill your coolant up full, both rad and overflow. the light will go out. if it is still on when everything is full, then your coolant sensor is broken or unplugged. if you light goes off then comes on again and your coolant is low, then you have a leak. if you have a 3400 engine in your lumina common leaks are intake gaskets, waterpumps, and head gaskets.
Replace the coolant temp sensor.
behind the starter motor at the back of the engine gearbox side
I'M NOT A MECHANIC but if I'm reading this right it is a heated oxygen sensor , (bank 2 , sensor 1 ?) Which would be the heated oxygen sensor on the driver's side of the engine , either screwed into the exhaust manifold or into the exhaust pipe near the engine. (Helpfull)
The easiest way to see if a head gasket is blown is to check the oil, if it is light brown and milky looking then the head gasket is blown. My 1998 Saturn would always overheat. I had replaced the radiator twice and all of the hoses but it continued to happen. The people at Saturn did not know the problem. I brought it to a raditor place and the replaced the gauge that reads the temperature and fixed the problem. The gauge was reading at a much lower temperature than the car really was so the fan would not turn on to cool down the car causing it to overheat. This might be your problem. There is a chemical that can be added to the coolant that will expose exhaust fumes. The head gasket may be fine, but overheating will endanger it. overheating could also be caused by a bad engine coolant temperature sensor, or a bad thermostat, possibly even a bad PCM. ** Only the top answer to this question actually ANSWERS the question.
Engine Coolant Temperature Sensor.
It should be on the right hand side.
where is the engine coolant temperature sensor- low input locationon a 1998 ford taurus
The coolant temperature sensor in a 1998 Cadillac Seville STS is in the engine compartment. It is located on the intake manifold.
Coolant Recovery Reservoir. There is no sensor in the coolant recovery tank on a 1998 Buick Regal.
V 6 300
The coolant temperature sensor of a 1998 Nissan Altima is located beside the upper radiator hose. It constantly updates the vehicle's computer about the engine's temperature.
The coolant temp sensor screws into the thermostat housing. This is located where the top radiator hose connects to the engine.
Either coolant is low or the sensor in the reservoir is stuck with dirt. Clean the reservoir with soap and water
IN THE WATER JACKET.
The coolant level sensor on a 2.4 L is under front of the coolant reservoir towards the engine. It has a 2-wire connector on it.
The coolant temperature sensor is located under the hood of the car. The sensor is located to the left of the brake booster at the rear of the engine.Ê