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Throttle Position Switch (TP): FESTIVA

  1. Ensure idle speed and ignition timing are adjusted to specification. Stop engine. Disconnect negative battery cable.
    CAUTION: DO NOT tamper with throttle stop screw at throttle lever. Doing so may result in damage to throttle body.
  2. Unplug TP connector at throttle body. Insert appropriate feeler gauge between throttle stop screw and stop lever. Check for continuity between specified terminals on TP connector. See TP ADJUSTMENT table.
  3. To adjust, loosen TP attaching screws. Connect ohmmeter between terminals IDL and TL. See Fig 1 . Insert a .020" (.5 mm) feeler gauge between throttle stop screw and stop lever.
  4. Rotate TP until ohmmeter indicates continuity. Insert a .028" (.7 mm) thickness gauge between stop screw and stop lever. Ohmmeter should indicate no continuity. If ohmmeter indicates continuity, repeat adjustment procedure.
TP ADJUSTMENT

Test Condition (1) Cont. Between IDL-TL Cont. Between PSW-TL
.02" (.5 mm) Yes No
.03" (.7 mm) No No
Wide Open Throttle No Yes
(1) Insert specified feeler gauge between throttle adjustment screw and stop lever.
Fig 1: Throttle Position Switch Connector Terminal ID. (Festiva)
G90D16520Courtesy of FORD MOTOR CO.
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