Throttle Position Sensor - No Start/Hesitation/Stall
84ford13 Article No. 84-13-6NO START/STUMBLE/HESITATION OR STALL 1.6L EFI, 1.6L EFI TURBO, 2.3L TURBO
FORD 1983-84 EXP, ESCORT, MUSTANG, T-BIRD, MUSTANG SVO
LINCOLN-MERCURY 1983-84 LYNX, CAPRI, COUGAR
The above concerns can be caused by oil entry into the throttle position sensor. Oil contamination can affect the functioning of the sensor indicated by EEC IV Self Test, codes 23, 53, 63 or 73. If pinpoint Test "DH" (Section 25, 1984 Emission Diagnostic Manual) directs the replacement of the TP Sensor a new TP sensor and gasket (Kit #E4ZZ-9B989-B) should be ordered. Follow the replacement procedure to install.
If after performing the EEC IV Quick Test (Section 16, 1984 Emission Diagnostic Manual) and Pinpoint Test DH (Section 25, 1984 Emission Diagnostic Manual), the TP Sensor needs to be replaced, the following procedure should be used:
1. Replace the TP Sensor with service Sensor (E4ZZ- 9B989-B) referring to Shop Manual Group 24 except do not tighten the 2 mounting screws.
2. Install an EEC IV Breakout Box, Rotunda 014-00322 or Special Service Tool T83L-50 EEC IV, or equivalent.
Figure 4:
3. Attach a DVOM, Rotunda No. 014-00407, or equivalent, on 20 V scale. Connect ( + ) to pin 47 and (-) to pin 46 (Figure 4).
4. Turn ignition key to "RUN" position (do not start engine).
5. Adjust TP Sensor (rotate) until the DVOM reads 1.0 V (0.9-1.1).
6. Tighten TP Sensor screws to 1.2-1.8 N-m (11-16 in.lb.).
7. 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 1.0 V.
8. Perform EEC IV Quick Test (Section 16, Emission Diagnosis Manual).
9. Verify satisfactory engine operation by drive evaluation.
10. Remove Breakout Box.
PART NUMBER PART NAME CLASS
E4ZZ-9B989-B Throttle Position Sensor Kit B
(w/gasket)
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP9989A84
TIME: 1.3 Hr. DLR. CODING: Basic Part No. 9B989 Code: 09