Shadow L4-153 2.5L SOHC Turbo (1989)
Torque Converter Clutch Solenoid: Customer Interest
Converter Lock Up Solenoid - Bucking/Surging
Models
1989-1990 AA, AC, AG, AH, AJ, AK, AL, AP, AS, Bodies
Subject
Surge/Buck at 35-55 MPH With Vehicles Equipped With 2.2, 2.5 And 3.0L Engines.
Index
DRIVEABILITY
Date
February 12, 1990
No.
18-02-90
P-205 (C18-27-9)
BODY CODE LEGEND
AA - ACCLAIM/SPIRIT/LEBARON LANDAU
AC - DYNASTY/NEW YORKER LANDAU/SALON
AG - DAYTONA
AH - LANCER/LEBARON GTS (4-DOOR HATCHBACK)
AJ
- LEBARON COUPE/LEBARON CONVERTIBLE
AK - ARIES/RELIANT
AL - OMNI/HORIZON
AP - SHADOW/SUNDANCE
AS - CARAVAN/GRAND CARAVAN/CARAVAN C/V
VOYAGER/GRAND VOYAGER/TOWN & COUNTRY
This bulletin applies to 1989 and 1990 vehicles equipped with A413 and A670 3 speed automatic transmissions with lock up torque converters. It does
not apply to vehicle equipped with the A604 4 speed automatic transmission.
SYMPTOM/CONDITION
A surge may be noticed at steady cruising speeds above 35 mph. In addition, bucking may occur under light deceleration conditions, especially when
cresting a hill.
DIAGNOSIS
The above conditions can be diagnosed by disconnecting the transmission lock-up torque converter solenoid, and driving the vehicle under the above
conditions. If the problem goes away, follow the repair procedure below. If either problem is still present, refer to the Diagnostic Test Procedure for
correction.
PARTS REQUIRED
Driveability Kit PN 4419447
Consists of:
1
Wiring Jumper Assembly
PN 4400768
1
Lock-Up Solenoid Cap
PN 4419446
2
Tie Wrap
PN 6015756
1
Authorized Modification Label
PN 4275086
REPAIR PROCEDURE
The following procedure involves disconnecting the lock-up torque convertor solenoid. The customer should be advised that after this repair is
performed, a loss in fuel economy of 1 to 2 miles per gallon may be noticed, depending on driving conditions.
