Marquis L4-140 2.3L VIN A 1-bbl (1986)
Throttle Position Sensor: Adjustments
ADJUSTMENT
This procedure can be used to check and/or adjust level C sensors only:
1. Install an EEC-IV Breakout Box, Rotunda T83L-50 EEC-IV, or equivalent.
2. Attach a DVOM, Rotunda 014-00407 or equivalent, on 20V scale. Connect the positive lead (+) to test Pin 47 and the negative lead (-) to test Pin 46.
3. Turn ignition key to Run position (do not start engine).
4. Adjust TP Sensor (rotate) until the DVOM reads 1.0V (0.9-1.1).
5. Tighten TP Sensor screws to 1.2-1.8 N-m (11-16 lb-in).
6. While watching the DVOM, move the throttle to wide open and back to idle position. For proper operation, the DVOM should move from 1.0 to at
least 4.0 and back to 1.0V.
7, Perform EEC-IV Quick Test. Refer to Powertrain Management/Computers and Control Systems/System Diagnosis
