Engine - Hesitation on Light Deceleration
Article No. 85-12-15HESITATION (TRAILER HITCHING)
- 3.8L - ON LIGHT DECELERATION
FORD 1984-85 LTD, THUNDERBIRD
LINCOLN-MERCURY 1984-85 MARQUIS, COUGAR
CALIBRATIONS: All with CFI
WARNING: This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and could create liability under applicable federal or local laws.
A hesitation on deceleration sometimes described as "trailer hitching" may be caused by a yellow dot MAP sensor. This concern can be serviced by installing a non "yellow dot" MAP sensor.
1. Perform a Quick Test and verify no other problems exist with the engine system and service as required.
2. If the drive concern persists, replace the MAP sensor with MAP sensor E5SZ-9F479-A. Do not use a "yellow dot" MAP sensor on the above vehicles. The use of a yellow dot sensor may cause trailer hitching.
PART NUMBER PART NAME CLASS
E5SZ-9F479-A MAP Sensor C
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: 12650D (Quick Test)
TIME: 0.5 Hr.
OPERATION: 12650DS1 (Retest)
TIME: 0.2 Hr.
OPERATION: 12650D13 (Replace Sensor)
TIME: 0.4 Hr. DLR. CODING: Basic Part No. 9F479 - Code: P5