Front Wheel Speed Sensor

1990 Pontiac Grand Prix STE, 3.1 VSECTION Front Wheel Speed Sensor
NOTE: Rear wheel speed sensor-to-rotor gap is nonadjustable.
  1. Raise and support vehicle. Remove tire and wheel assembly. Inspect sensor pole piece for damage. If damaged, replace as necessary. If sensor pole piece is okay, check wheel speed sensor-to-rotor gap. Using a feeler gauge, check clearance between speed sensor pole and rotor tooth surface.
  2. Clearance should be .019-.068" (.48-1.73 mm). If clearance is not within specification, loosen sensor mounting bolt. Adjust sensor position until clearance is within specification. Tighten sensor mounting bolt. Install tire and wheel assembly. Lower vehicle.
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:

  • 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.