Engine Speed Sensor

1979 Chevrolet Luv RWD, Automatic Trans, Trans Mfr CD 200CSECTION Engine Speed Sensor

Detach speed sensor connector and connect "B", "BR" and "BY" color-coded wiring terminals to each other with jumper wires. Start engine and check for continuity between "BW" color-coded wiring terminals. Above 1900 RPM, speed sensor is okay if continuity exists. If not, replace sensor.

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When to See a Mechanic

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

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