Engine - Hard Start/No Start When Cold

87ford12

^ HARD START - 2.3L HSC CFI WITH ATX Article No.
TRANSAXLE - COLD ENGINE 87-1-13

^ NO START - 2.3L HSC CFI WITH ATX TRANSAXLE-COLD ENGINE


FORD 1985-86 TEMPO

LINCOLN-MERCURY 1985-86 TOPAZ

CALIBRATIONS: 5-26E-R0, 5-26E-R10, 5-26E-R21; 5-26R-R01, 5-26R-R11, 5-26R-R16; 6-26E-R0; 6-26R-R10

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.

ISSUE: No start and/or hard start on initial cold start up at ambient temperatures of 15~ to 40~F (-10~ to 5~C) may be caused by the strategy of the EEC IV processor assembly installed on the vehicle.

ACTION: To correct this, install a new level EEC IV processor assembly using the following service procedure.

NOTE: Refer to the following application chart to select the correct new level replacement EEC IV processor assembly for the affected calibration.

CALIBRATION APPLICATION CHART

Calibration Application New Level EEC IV
Processor
5-26E-R0 49S - ATX E63Z-12A650-TG
5-26E-R10 49S - ATX E63Z-12A650-TG
5-26E-R21 49S - ATX E63Z-12A650-TG
5-26R-R01 Calif. - ATX E63Z-12A650-UG
5-26R-R11 Calif. - ATX E63Z-12A650-UG
5-26R-R16 Calif. - ATX E63Z-12A650-UG
6-26E-R0 49S - ATX E63Z-12A650-TG
6-26R-R10 Calif. - ATX E63Z-12A650-UG

1. Replace the EEC IV processor assembly.

2. Adjust "hard stop" RPM to the specification listed on page 24 of TSB 86-19-12.
3. Perform adaptive idle speed control reset procedure as outlined in the Engine/Emission Diagnosis Manual, Volume H, Section 4-55.

4. Reset transmission TV adjustment as outlined in the Car Shop Manual, Volume E, Section 17-02.

5. Perform the EEC IV Self-Test to make sure the EEC IV system is operating properly.



Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.
PART NUMBER PART NAME CLASS

E63Z-12A650-TG Processor Assembly B
E63Z-12A650-UG Processor Assembly W


OTHER APPLICABLE ARTICLES: 86-19-12
WARRANTY STATUS: Reimbursable within basic warranty provisions.
OPERATION: SP870113A
TIME: 1.7 Hrs. DLR. CODING: Basic Part No. DRIVE - Code: J2