Engine - Stalling During Deceleration

87ford12

STALLS - 2.3L HSC CFI WITH MTX TRANSAXLE - Article No.
DECEL/CLUTCH DISENGAGEMENT AFTER INITIAL 87-1-16
COLD START


FORD 1985-86 TEMPO

LINCOLN-MERCURY 1985-86 TOPAZ

CALIBRATIONS: 5-25F-R0, 5-25F-R10, 5-25Q-R0, 5-25Q-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: Stalling during decel after the clutch is disengaged and the vehicle is slowing down for a stop or when going into a turn may be caused by the EEC IV processor. The stalling condition will usually occur during the first two miles of cold driveaway.

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 EEC IV processor assembly for the affected calibration.

CALIBRATION APPLICATION CHART


Calibration Application Now Level EEC IV
Processor
5-25F-R0 49S-MTX E63Z-12A650-VB
5-25-R10 49S-MTX E63Z-12A650-VB
5-25Q-R0 Calif.-MTX E63Z-12A650-XB
5-25Q-R10 Calif.-MTX E63Z-12A650-XB

1. Replace the EEC IV processor assembly.

2. Start and run the engine until it is at full operating temperature (upper radiator hose hot and pressurized). Idle the engine for two minutes with the transmission in Neutral to learn the Adaptive Idle Speed Control.

3. Reset the throttle hard stop to specification. Refer to page 24 of TSB 86-19-12 for hard stop specification.

NOTE: ISC must be fully retracted and electrically disconnected to adjust the hard stop speed.

4. Perform the EEC IV self-test to make sure the system is operating properly.

NOTE: If service codes are received from self-test using the 1986 new level processor then the 1986 Diagnostics (base) must be used for pinpoint tests.




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 coyer it with a clear plastic decal shield.

PART NUMBER PART NAME CLASS

E63Z-12A650-VB Processor Assembly R
E63Z-12A650-XB Processor Assembly W


OTHER APPLICABLE ARTICLES: 86-19-12
WARRANTY STATUS: Reimbursable within basic warranty provisions.
OPERATION: SP870116A
TIME: 1.6 Hrs. DLR. CODING: Basic Part No. DRIVE - Code: J9