Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

1994 BMW 318is (E36) L4-1796cc 1.8L DOHC (M42)SECTION Testing and Inspection


RESISTANCE TEST
- Drain coolant.
- Remove the coolant temperature sensor.
- Submerge sensor element in water and measure the resistance across sensor terminals.

@ 68° F = 2.2 K - 2.7 K ohms
@ 176° F = 290 - 360 ohms

Replace the sensor if the correct results are not obtained.
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.