Full Answer
Where is the temperature sending unit located?
The ECT sensor is typically near the thermostat in the cylinder head or thermostat housing. The ECT sensor is typically near the thermostat in the cylinder head or thermostat housing. Many vehicles also have a second ECT sensor on a different part of the engine or radiator.
Where is the coolant temperature sensor usually located?
The CTS is normally towards the front of the engine, near the radiator or thermostat housing. Because it's a small component and is often located lower down inside the engine bay, you may need to use a light or torch to find it.
What is the temperature sending unit?
A coolant temperature sender is an on engine protection device that is used to monitor the coolant temperature of the engine. Normally screwed into the engine block, it can output a range of values based on the oil pressure in the engine.
What temp should my SBC run at?
between 195 degrees and 220 degreesMost experts agree that your engine should run between 195 degrees and 220 degrees.
What happens when a temperature sensor goes bad?
If you notice that your engine overheats, the coolant temperature sensor could be the problem. At times, the coolant temperature switch may fail such that it starts transmitting hot signals permanently. This causes the computer to erroneously counterbalance the signal, thereby causing the engine to misfire or overheat.
What are the symptoms of a faulty temperature sensor?
What Signs May Signal Your Coolant Temperature Sensor May Be Failing?Poor Fuel Economy. ... Irregular Temperature Readings. ... Black Smoke from Your Exhaust. ... Your Engine is Overheating. ... Your Check Engine Light is On.
How do I know if my temperature sensor is working?
Submerge your temperature sensor in the hot water and wait a few seconds to let your multimeter take a reading. Write down your reading so you can easily reference it. A hot water reading should give you around . 25 volts.
What sensor turns on the radiator fan?
coolant temperature sensorOn most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor.
What happens if you unplug the coolant temp sensor?
What Happens If You Unplug The Coolant Temp Sensor? What is this? Unplugging the engine coolant sensor while the car is running will likely cause the engine to stumble and run rough. The engine light may not come on imminently, but a DTC (Diagnostic Trouble Code) will be logged in the PCM.
What makes a SBC run hot?
A common SBC overheating issue is airflow over the radiator being blocked by a number of materials. Dirt, dust, leaves, and even insects that pass through a car's front grille will get stuck on the vanes and thin metal plates that make up a radiator's design.
Is 250 degrees to hot for an engine?
You can run your car at 240 or 250 degrees without hurting anything, as long as the water in the radiator doesn't boil. Once the water boils, it will immediately push water out the overflow, lower the coolant level in the radiator, and give you air bubbles circulating through the cooling system.
How hot is too hot for an engine?
Of course, factors such as air conditioning, towing and idling at a stop will impact this, but you should be fine if your car is running at anywhere between 190-220 degrees. Over this limit, and your radiator and coolant fluids run a higher risk of burning.
How many coolant temperature sensors are in a car?
two temperature sensorsThere are two temperature sensors in some vehicles, one to send information from the engine system to the control unit and another from the control unit to the dashboard. The device follows the principle of dependence of potential difference in temperature.
Why does my car say low coolant when it's full?
Low coolant levels are usually caused by leaks, either in the reservoir or somewhere in the lines. These leaks can be a serious problem, as they're not easily diagnosed and easily fixed.
What sensor controls the radiator fan?
I believe most cars use a temperature sensor that measures the temperature directly at the radiator to control the fans.
How do you change a coolant temperature sensor?
With the engine and coolant entirely cooled down, disconnect the battery. ... Remove any plastic engine covers. ... Locate the coolant temp sensor. ... Partially drain the cooling system, or perform a coolant flush, if it is due. ... Disconnect the electrical connector from the sensor by pushing on the tab and pulling the connector.More items...•
ACDelco 12334869 - ACDelco Gold Engine Coolant Temperature Sensors
Sensor, Coolant Temperature, Brass, Natural, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each
ACDelco 12551708 - ACDelco GM Genuine Parts Engine Coolant Temperature Sensors
Sensor, Coolant Temperature, M12 x 1.5 Thread Size, Brass, Natural, Chevy, Pontiac, 5.7L LS, Each
Standard Motor Products TS6 - Standard Motor Coolant Temperature Sending Units
Temperature Sender, Without Light, OEM Replacement, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each
Standard Motor Products TX3 - Standard Motor Coolant Temperature Sending Units
Temperature Sender/Switch, OEM Replacement, for use on Acura®, Asuna, GM, Honda®, Isuzu, Jeep, Each
Delphi TS10075-11B1 - Delphi Engine Coolant Temperature Sensors
Coolant Temperature Sensor, OEM, Brass, Natural, for use on Acura®, Honda®, Chevy, Isuzu, Each
Delphi TS10076-11B1 - Delphi Engine Coolant Temperature Sensors
Coolant Temperature Sensor, OEM, Brass, Natural, Buick, Cadillac, Chevy, GMC, Pontiac, Saab, Saturn, Each
Standard Motor Products TS71 - Standard Motor Coolant Temperature Sending Units
Temperature Sender/Switch, OEM Replacement, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each
