A/T - 4R44E/5R55E Whistling/Hissing Noise At Idle

Article No.
98-5-14

03/16/98

^ NOISE - "WHISTLING/HISSING" FROM
TRANSMISSION MAIN CONTROL AREA DURING
IDLE - VEHICLES WITH 4R44E OR 5R55E
TRANSMISSION

^ TRANSMISSION - 4R44E OR 5R55E -
"WHISTLING/HISSING" NOISE FROM MAIN
CONTROL AREA DURING IDLE

LIGHT TRUCK:
1997 AEROSTAR
1997-98 EXPLORER, MOUNTAINEER, RANGER

This TSB article is being republished in its entirety to include one chart to clarify the parts needed for repair.

ISSUE:
A "whistling" or "hissing" noise from the main control area may occur while idling in Drive and/or Reverse on some vehicles that have either a 4R44E or 5R55E transmission. This may be due to an improperly sized orifice hole in the main control separator plate.

ACTION:
Replace the separator plate with a revised separator plate. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Perform normal diagnosis by referring to the appropriate model/year Service or Workshop Manual.

2. Repair all Diagnostic Trouble Codes (DTCs) as listed.

3. Repair all transmission concerns as required.








4. Verify that the whistle/hiss noise still exists. If the condition still exists, install the revised Separator Plate (-7A008-) onto the main control. Refer to the Service Manual for proper procedure. Refer to the Application Chart for the correct separator plate.

NOTE:
IF A SYMPTOM OTHER THAN "WHISTLING/HISSING" REQUIRES REPLACING THE MAIN CONTROL, REFER TO THE MAIN CONTROL CHART WITH THE UPDATED PART NUMBERS FOR CORRECT APPLICATION.





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 97-25-9

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

OPERATION DESCRIPTION TIME

98O514A Replace Separator Plate - 1.6 Hrs.
Aerostar

980514B Replace Separator Plate - 2.0 Hrs.
Ranger, Explorer,
Mountaineer

DEALER CODING
CONDITION
BASIC PART NO. CODE
7A008 16

OASIS CODES: 503000, 504000, 590000, 597997, 702000, 702300