Engine Temperature Sensor: Service and Repair

2012 Ford Flex AWD V6-3.5L TurboSECTION Service and Repair



Cylinder Head Temperature (CHT) Sensor - 3.5L GTDI










1. Remove the Air Cleaner (ACL) outlet pipe and the ACL (Air Cleaner).

2. Position the ACL (Air Cleaner) -to-RH turbocharger intake tube aside. For additional information, refer to Intake Air System Components- Exploded View in Fuel Delivery and Air Induction.

3. Remove the ground wire-to-engine front cover bolt.

4. Disconnect the Cylinder Head Temperature (CHT) sensor electrical connector.

5. Remove and discard the CHT (Cylinder Head Temperature) sensor.
- To install, tighten to 10 Nm (89 lb-in).


6. To install, reverse the removal procedure.
- Do not reuse the CHT (Cylinder Head Temperature) sensor. Install a new sensor.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.