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Standard - Just The Facts
Just The Facts
Accelerator Pedal Sensors
Air Charge and Manifold Temperature Sensors
Airbag Clock Springs
Anti Lock (ABS) Sensors
Anti Lock Brake (ABS) Sensors Testing
Barometric Pressure (BARO) Sensors
Brake Pad Wear Sensors
Camshaft and Crankshaft Position Sensors
Camshaft Synchronizer Assemblies
Coolant Temperature Sensors
COP Boot and Pigtail Socket Assortments
Daytime Running Light Kits
DIS Control Modules
Don't Get PO'ed with PO401 Codes
EGR Position and EGR Pressure Sensors
EGR Valves
Fuel Injectors
Fuel and Water Separator Sensor
Ignition Coil Testing
Ignition Coil on Plug (COP)
Knock (Detonation) Sensors
MAF (Mass Air Flow) Sensors
MAP (Manifold Absolute Pressure) Sensors
Oxygen (O2) Sensors
T Series Fuel Injector line addition
Throttle Position Sensors
Tire Pressure Monitoring (TPMS) Sensors
TPMS Service and Repair
Two or Four, That is the Question
Vehicle Speed Sensors
Vehicle Warning Lights
Water Intrusion and Premature Coil Failure (UF303)
YAW Rate Sensors
Coolant Temperature Sensors

Coolant Temperature Sensors
What does a Coolant Temperature Sensor do?
The Coolant Temperature sensor changes resistance with the temperature. The Coolant Temperature sensor is critical to many PCM functions such as fuel injection, ignition timing, variable valve timing, and transmission shifting.

Where are these sensors located?
The Coolant Temperature sensor is located in a coolant passage in the engine usually near the thermostat.

Will a malfunctioning Coolant Temp Sensor illuminate the check engine light or affect vehicle operation?
Yes, a failing sensor can illuminate the MIL, and cause the engine to run rich or lean. The transmission may shift incorrectly or not lock-up the torque converter.

What are the common causes of failure?
Typically these sensors fail due to corrosion within the coolant system. They may also leak coolant through the wiring connector.

How to determine if these sensors are malfunctioning.
A DTC will be set if an abnormal reading occurs, P0116 for sensor performance, P0117 low input or P0118 for a high input. The coolant temperature sensor temperature reading should closely match the air charge/manifold temperature reading on a scan tool if the engine has not been run for over an hour. The sensor circuit can be checked for proper voltage using a voltmeter.

What makes Standard Coolant Temp Sensors  the best.
  • As a basic manufacturer, Standard has complete control of the manufacturing process from componentry to finished product
  • Temperature sensor design specifies tight tolerance thermistor response values to assure accuracy of the temperature measurement and proper part operation
  • All Coolant Temperature sensors are 100% factory tested to ensure trouble-free performance


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