A/T - CD4E Harsh Shift On 1-2 Upshift/3-2 Downshift: Overview

Article No.
98-13-11

07/06/98

^ TRANSMISSION - CD4E - "HARSH" SHIFT ON 1-2
UPSHIFT DURING LIGHT THROTTLE - VEHICLES
WITH 2.0L OR 2.5L ENGINE - CONTOUR/MYSTIQUE
BUILT THROUGH 5/31/98 AND COUGAR BUILT
THROUGH 6/11/98

^ TRANSMISSION - CD4E - "HARSH" SHIFT ON 3-2
DOWNSHIFT AFTER A 1-3 UPSHIFT - VEHICLES
WITH 2.0L OR 2.5L ENGINE - CONTOUR/MYSTIQUE
BUILT THROUGH 5/31/98 AND COUGAR BUILT
THROUGH 6/11/98

FORD:
1998 CONTOUR

LINCOLN-MERCURY:
1998 MYSTIQUE
1999 COUGAR

CALIBRATION





Refer to the Recalibration Cross Reference Chart in this TSB article for affected calibrations.

WARNING
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE(S). PERFORMING THIS MODIFICATION ON OTHER ENGINE CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.

ISSUE

A "harsh" shift event, usually on the 3-2 downshift after a 1-3 upshift may occur on some vehicles. This may occur during heavy traffic with frequent "stop-and-go" driving. Some vehicles may also exhibit a harsh, light throttle, 1-2 upshift. This may be caused by the transmission band being applied to bring on 2nd gear without the hydraulic servo pressure being adequately modulated.

ACTION

Reprogram the Powertrain Control Module (PCM) and change the CD4E servo components described in the Service Procedure for details.

NOTE
THE CALIBRATIONS AND SERVO COMPONENTS LISTED IN THIS TSB MUST BE USED TOGETHER. MIXING COMPONENTS AND/OR CALIBRATIONS MAY CAUSE REDUCED TRANSMISSION DURABILITY AND SHIFT COMPLAINTS.

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

981311A Replace Servo And 1.4 Hrs.
Reprogram Powertrain
Control Module (PCM)

DEALER CODING
CONDITION
BASIC PART NO. CODE
7000 42

OASIS CODES: 501000, 502000, 504000