Grand Marquis V8-281 4.6L SOHC (1992)
Electronic Control Assembly (ECA): All Technical Service Bulletins
A/T - AODE Noisy/Harsh/Extended Shifting
Article No.
93-3-13
February 3, 1993
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TRANSMISSION - AODE - "DRUMMING" OR "GROANING" NOISE - 2.73 AXLE EQUIPPED CROWN VICTORIA/GRAND MARQUIS
VEHICLES BUILT AFTER 2/1/92
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TRANSMISSION - AODE - 4-3 COAST TIP-IN BUMP OR JERK - CROWN VICTORIA/GRAND MARQUIS VEHICLES BUILT AFTER
2/1/92
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TRANSMISSION - AODE - EXTENDED SHIFT DURING ACCELERATION - CROWN VICTORIA/GRAND MARQUIS VEHICLES BUILT
AFTER 2/1/92
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TRANSMISSION - AODE - OCCASIONAL FIRM 3-4 SHIFT - CROWN VICTORIA/GRAND MARQUIS VEHICLES BUILT AFTER 2/1/92
FORD: 1992 CROWN VICTORIA
LINCOLN-MERCURY: 1992 GRAND MARQUIS
CALIBRATION:
2-18F-R00, 2-18G-R00, 2-18H-R00, 2-181-R00, 2-18M-R00, 2-18N-R00
WARNING:
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE. PERFORMING THIS MODIFICATION ON OTHER ENGINE
CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.
ISSUE:
The AODE Transmission may exhibit the following concerns:
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4-3 Coast Tip-in Bump - This concern occurs during 4-3 coasting down shifts. When the accelerator pedal is depressed, while coasting in 4th
gear, a drive line "bump" or "jerk" may be felt.
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Occasional Firm 3-4 Shift - This condition is caused by the torque converter clutch engaging prior to the 3-4 shift being completed.
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Extended Shift - This occurs during acceleration when the accelerator is suddenly released. Normal torque converter clutch disengagement
may be observed as an increase in engine speed.
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Transmission "Drumming" or "Groaning" Noise - This condition occurs on vehicles equipped with 2.73 axles when the vehicle is in
overdrive and operating in 4th gear between 34-42 MPH (55-68 KmH).
The above concerns may be caused by the operating strategy of the powertrain control module.
ACTION:
Replace the existing powertrain control module with a a new module which has a revised shift and converter clutch operating strategy. Refer to the 1992
Lincoln Town Car, Crown Victoria/Grand Marquis Service Manual, Section 07-01A, for service details.
Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to