1990 Ford Probe GL, AutomaticFACTORY OEM SERVICE PROCEDURE

KOEO Wiggle Test Procedure

Connect test equipment. Turn ignition on and activate self-test with jumper lead or diagnostic tester. Wait 10 seconds, deactivate and then reactivate self-test. Wiggle test mode has been achieved. Tap, move and wiggle the suspected sensor and/or harness area. If a fault is detected, a code may be stored in memory and indicated at the diagnostic tester or Scan tool. Record code and perform CIRCUIT TEST indicated in CONTINUOUS MEMORY CODES chart. See TESTS W/CODES article.

Factory Service Tools

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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.