Shadow Convertible L4-153 2.5L SOHC VIN K TBI (1992)
Auxiliary Air Valve (Idle Speed): Customer Interest
IAC Motor - Intermittent Erratic Idle Speed
NO.:
18-07-92 Rev. A
GROUP:
Driveability
DATE:
Aug. 24, 1992
SUBJECT:
Erratic Idle Speed
NOTE:
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-07-92 WHICH SHOULD BE REMOVED FROM YOUR FILES. THE
1990 (AL) OMNI/HORIZON MODEL HAS BEEN ADDED.
NOTE:
THIS BULLETIN APPLIES ONLY TO VEHICLES EQUIPPED WITH A 2.2L OR 2.5L TBI ENGINE AND A MANUAL TRANSAXLE.
MODELS:
**1990
(AL) Omni/Horizon**
1990-1992
(AA) Acclaim/Spirit
(AG) Daytona
(AJ) Lebaron Coupe/Lebaron Convertible
(AN) Dakota
(AP) Sundance/Shadow/Shadow Convertible
(AS) Caravan/Voyager
SYMPTOM/CONDITION:
Vehicles may exhibit intermittent erratic idle speeds. This condition will most likely occur after decelerating from a steady cruising speed.
DIAGNOSIS:
Before proceeding to the repair procedure, verify that the idle speed control system is functioning properly as outlined in the appropriate diagnostic
procedures manual.
PARTS REQUIRED:
1
Motor, Idle Air Control (Automatic Idle Speed)
4612453
REPAIR PROCEDURE:
This bulletin involves replacing the Idle Air Control (IAC) Motor with a revised motor.
1.
Remove the IAC Motor and O-ring as outlined in the appropriate service manual.
NOTE:
IF DIFFICULTY IS EXPERIENCED WHEN REMOVING THE IAC MOTOR ATTACHING SCREWS, REFER TO THE FOLLOWING
ATTACHING SCREW REMOVAL PROCEDURE.
2.
Install the new IAC Motor and O-ring, PN 4612453, as outlined in the service manual.
ATTACHING SCREW REMOVAL PROCEDURE
PARTS REQUIRED:
1
Gasket, Throttle Body 4324411
NOTE:
THIS PROCEDURE SHOULD BE USED IF THE TORQUE REQUIRED TO REMOVE THE IAC MOTOR ATTACHING SCREWS EXCEEDS 50
INCHPOUNDS. ATTACHING SCREWS MAY BREAK IF MORE THAN 50 INCH-POUNDS OF TORQUE IS APPLIED.