![]() ![]() The water temperature sensor enables the control unit to identify engine overheating or an unusual rise in temperature. A 48 parts numbers range - An expert on Cooling Systems, Valeo offers a complete cooling systems range with its thermostats, thermoswitches and water temperature sensors The Temperature sensor measures the coolant temperature & sends information to the ECU.Ĭhoose Valeo water temperature sensors for: - The know-how of a worldwide key player. If the thermostat is operating normally but the coolant temperature sensor isn’t, that should show up as a problem on the dash gauge reading.Valeo water temperature sensor range: Protect your engine and heat exchangers in extreme temperature conditions If there is a gauge on the dash, typically, that would be right at the halfway mark. Most engines have a thermostat that is designed to maintain the engine temperature at about 200 degrees once the vehicle is warmed up. What Happens When the Coolant Temperature Sensor Fails? Some older vehicles also use a coolant switch – most often in the radiator housing – to directly control the cooling fans. ![]() Many vehicles have a coolant level sensor (usually on the coolant reservoir) which can trigger a dash light or warning if the coolant level gets below a certain point. There are a couple of other coolant sensors that this shouldn’t be confused with. The temperature information from the sensor is also displayed on a dash gauge, or sometimes just used to trigger a warning light in the event of an overheating condition. Its role is to inform the engine management system of the engine temperature which uses that information to adjust fuel mixtures and timing, as well as to know when to turn on the cooling fans. The coolant temperature sensor is usually located near the top of the engine either in a cylinder head coolant passage or at the thermostat housing. This would have a diagnostic procedure to verify the failure and it is generally most economical to go through the diagnostic procedure to rule out other possible causes and verify the failure before replacing parts. In the event of a failed or inaccurate coolant temperature sensor, a generic OBDII code such as P0116 could be triggered. Sometimes, a sensor can trigger a trouble code and turn on the engine light. Coolant costs vary from about $7 a gallon to as much as $50 a gallon for some factory brands.īefore a sensor is replaced, it ordinarily must be diagnosed and most shops have a flat one-hour diagnostic charge for that. Depending on how the sensor is placed, the quantity might be a small amount or it might be as much as a gallon. It’s normal for a charge to be added for replacing coolant as necessary. Sometimes, the coolant can be drained into a clean container and re-used, but this isn’t always practical and the draining process itself can introduce contaminants. When the sensor is removed, the coolant is lost. That would make the job about $316 using OE parts, or about $290 using aftermarket parts. An OE Denso sensor costs about $76 and an ACDelco replacement sensor is about $50. 2010 Toyota Camry with a 2.5-liter engine – the labor time for sensor replacement is 1.6 hours.That would make the job about $150 using OE parts, or about $130 using aftermarket parts. A factory replacement costs around $60 while an NTK replacement sensor is about $40. 2006 Volkswagen Jetta 2.5-liter engine – the estimated labor time for sensor replacement for this vehicle is 0.6 of an hour.This would make the job about $144 using factory parts, and about $118 using aftermarket parts. An OE Mopar sensor costs about $54 and a Standard replacement sensor costs about $28. 2013 Journey 3.6-liter engine – the labor time for sensor replacement is 0.6 of an hour.A GDP replacement sensor costs about $36 which would make the replacement cost about $110. 2010 Ford Fusion 3.0-liter engine – it usually takes half an hour of labor to replace the sensors.To illustrate, here are estimates of the coolant temperature sensor price on some common vehicles using a labor rate of $150 per hour: Cost of Coolant Temperature Sensor Replacement There are many possible codes, but common generic sensor codes would be P0115, P0116, and P0117. In many cases it would begin with a trouble code, as the PCM monitors the coolant temperature sensor. Sensor diagnosis is generally done by taking a measurement of the coolant temperature, reading the resistance of the sensor with a multimeter, and comparing the results to a chart to verify accuracy. ![]()
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