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I'm looking for the location of the engine coolant

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I'm looking for the...

I'm looking for the location of the engine coolant temperature sensor on a 2007 Lincoln MKZ

Mechanic's Assistant: Okay, I'll connect you to the mechanic to help find that for your Lincoln MKZ. Before I do, is there anything else you want him to know?

If he could send a diagram, that would be great too.

Submitted: 8 months ago.Category: Lincoln
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Answered in 7 minutes by:
11/17/2017
Lincoln Mechanic: Eric, Automotive Repair Shop Manager replied 8 months ago
Eric
Eric, Automotive Repair Shop Manager
Category: Lincoln
Satisfied Customers: 34,880
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified

HI,

Yours uses what is called an engine cylinder head temperature sensor to measure coolant temperature for the computer. It is located underneath the intake manifold - see attached

2007 Lincoln MKZ AWD V6-3.5L VIN T

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CYLINDER HEAD TEMPERATURE (CHT) SENSOR

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72_fm07hmgas_1-020.png

Typical CHT Sensor

The CHT sensor is a thermistor device in which resistance changes with the temperature. The electrical resistance of a thermistor decreases as temperature increases., and the resistance increases as the temperature decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signals to the PCM corresponding to temperature.

The CHT sensor is installed in the cylinder head and measures the metal temperature. The CHT sensor can provide complete engine temperature information and can be used to infer coolant temperature. If the CHT sensor conveys an overheating condition to the PCM, the PCM initiates a fail-safe cooling strategy based on information from the CHT sensor. A cooling system concern such as low coolant or coolant loss could cause an overheating condition. As a result, damage to major engine components could occur. Using both the CHT sensor and fail-safe cooling strategy, the PCM prevents damage by allowing air cooling of the engine and limp home capability.

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Lincoln Mechanic: Eric, Automotive Repair Shop Manager replied 7 months ago

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.

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