1986 Merkur XR4Ti AutomaticFACTORY OEM SERVICE PROCEDURE

Idle Tracking Switch (ITS)

The ITS is a mechanically operated switch held open by throttle linkage when throttle is closed. When throttle stop lever is against switch, ITS is open. The input will inform ECA that ISC motor plunger is touching throttle. The ITS is an integral part of the ISC motor.

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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.