Testing

CONDITION INSPECT COMPONENT FOR CAUSE

ENGINE-RELATED SHUDDER, Engine Fuel Delivery System Restriction or imbalance. For example,

OR "CHUGGLE" fouled fuel injectors due to deposits.

Engine Ignition System Improper operation. Includes items such
as fouled or broken spark plugs.

TCC APPLY SHUDDER Torque Converter Cover Dimpling caused by too-long bolts (Max.

length 15 mm).

Torque Converter See NOTE, following chart.

TCC APPLY SHUDDER OR Turbine Shaft Seals Missing or damaged.
CROWD SHUDDER (Crowd
TCC Accumulator Piston Seal Cut or rolled. Refer to Bulletin HM 85-17.
shudder occurs after TCC apply,

when accelerator is depressed) TCC Solenoid O-Ring Cut or broken.

Valve Body Gasket Torn or mispositioned.

TCC CROWD SHUDDER Downshift Delay Module Improper operation.
(Canadian 2.8 LE2 Only)

1-2 SHIFT SHUDDER 2nd Clutch Plates Replace steel and fiber plates (soak in
transaxle fluid for 30 mins. prior to

installation).

2-3 SHIFT SHUDDER Servo Release Pipe Seals Cut seals. Refer to Bulletin HM 86-07.

SHUDDER UNDER LOAD OR Right Rear Engine Mount Engine grounding out.
ACCELERATION (1986 3.8L H-Body Only)

NO TCC APPLY, DELAYED TCC TCC Solenoid Apply Valve, Sticking in valve body. (At start of pro-
RELEASE, OR TCC APPLY AND/ TCC Pressure Regulator Valve duction 1986, the TCC regulator valve
OR RELEASE SHUDDER Or Spring spring was eliminated on the following
models: AAH, ACH, ADH, AFH, AMH, ARH, BHH, CFH, CHH, CMH, CNH, HBH, and HJH.)

SHUDDER IN REVERSE Right Rear Engine Mount Engine grounding out.
(1986 E-Body)


NOTICE: A 1986 THM 440-T4 TRANSAXLE BUILT BEFORE MARCH 10, 1986 (JULIAN DATE 069) MAY EXHIBIT A [1][2]TORQUE CONVERTER CLUTCH APPLY SHUDDER AT 45-55 MPH.

THE SHUDDER CONDITION MAY BE CAUSED BY THE DAMPER PLATE NOT FULLY SEATING.
IF THE TCC APPLY SHUDDER CONDITION IS EXHIBITED, AND ALL DIAGNOSTIC PROCEDURES HAVE BEEN PERFORMED, REPLACE THE TORQUE CONVERTER WITH A SERVICE CONVERTER AS INDICATED BELOW.


MODEL TORQUE CONVERTER PART NUMBER

4CW, 5CM, 5CN, 5CP, 5CW, 5HA, 5HJ, 5HT,
8656920
6CFH, 6CMH, 6CNH, 6HBH, 6HJH

4BC, 5BA, 5BC, 5BN, 5BR, 6BDH, 6BLH,
8656921
6BMH, 6BTH, 6BVH, 6BZH

6BBH 8656922

5BS, 5BU, 5BW, 6BHH 8656923

5BW, 5BX, 6BAH, 6BCH, 6BSH 8656924