A/T - Slips on Light 2-3 Upshift
NO: 21-23-95 Rev. AGROUP: Transmission
DATE: Jan. 26, 1996
SUBJECT: Transaxle Slips Momentarily During Light Throttle 2-3 Upshifts
NOTE:
This bulletin supersedes Technical Service Bulletin 21-23-95, dated Dec. 22, 1995, which should be removed from your files. A labor operation number is revised and highlighted with **asterisks**.
MODELS: 1995 - 1996 (PL) Neon
NOTE:
This bulletin applies to vehicles equipped with a 31TH Transaxle.
SYMPTOM/CONDITION:
Transaxle slips momentarily (engine RPM increases/flares) during light throttle 2-3 upshifts.
DIAGNOSIS:
Road test the vehicle. Accelerate at light throttle to achieve a 2-3 upshift at 18-22 MPH and listen for the engine to flare. If the engine flares during the 2-3 upshift, perform the Repair Procedure.
PARTS REQUIRED:
1 (AR) 4669863 Bracket, Kickdown With Single Over Head Cam (SOHC) Engine
1 (AR) 4569864 Bracket, Kickdown With Double Over Head Cam (DOHC) Engine
1 (AR) 4659879 Valve Body
1 (AR) 4269649 Filter, Transaxle Oil
AR 4798233 Fluid, Mopar Automatic Transmission Type 7176
REPAIR PROCEDURE:
This bulletin involves adjusting the throttle pressure cable; or replacing the kickdown bracket on the throttle body and adjusting the throttle pressure cable; or replacing the kickdown bracket on the throttle body and valve body and adjusting the throttle pressure cable.
1. Check the throttle pressure cable for proper adjustment (there should be no backlash) adjust if needed, use the following procedure while the engine is at normal operating temperature:
A. Release the cross-lock on the throttle pressure cable assembly (pull the cross-lock up). Refer to Figure 1.
B. To ensure proper adjustment, the cable must be free to slide all the way toward the engine (against its internal stop) after the cross-lock is released. Move the transaxle throttle control leveler fully clockwise (against its internal stop) and press the cross-lock down into the locked position.
Adjustment is now complete and any throttle cable backlash has been automatically removed. Test the throttle pressure cable assembly for freedom of operation by moving the transaxle throttle control lever forward (counterclockwise). Then slowly release the lever to confirm it will return fully rearward (clockwise). No lubrication is required for the throttle cable system.
C. Road test the vehicle to verify the flare condition is corrected.
2. If the flare condition persists, replace the kickdown bracket on the throttle body with the appropriate bracket specified in the Parts Required section of this bulletin. Then perform Step 1 again.
3. If the flare condition persists, replace the transaxle valve body (P/N 4659879), use the following procedure:
A. Record the radio station presets and disconnect the battery cables.
B. Pull the Power Distribution Center (PDC) up and out of its holding bracket. Set the PDC aside to gain clearance.
C. Remove the battery from the vehicle and disconnect the cruise control, if equipped.
D. Loosen the throttle pressure cable lever and gear shift cable lever pinch bolts. Refer to Figure 2. Remove both levers from their shafts and set aside.
E. Raise the vehicle on an appropriate hoist.
F. Clean the bottom of the transaxle.
G. Remove the transaxle oil pan and properly dispose of the fluid. Be sure to remove all sealant from the mating surfaces.
H. Remove the neutral start/back-up lamp switch. Refer to Figure 3.
I. Remove and discard the transaxle oil filter.
J. Remove the "E"-clip holding the parking rod to the valve body and separate the rod from the valve body. Refer to Figure 4.
K. Remove the 7 bolts attaching the valve body to the transaxle and separate the valve body and governor tubes from the transaxle. Refer to Figure 5.
L. Install the new valve body (P/N 4659879) and governor tubes to the transaxle, torque the 7 attaching bolts to 105 in. lbs. (12 Nm).
M. Install the parking rod and secure with the "E"-clip previously removed.
N. Install a new transaxle oil filter (P/N 4269649), torque the screws to 40 in. lbs. (5 Nm).
0. Install the neutral start/back-up lamp switch.
P. Apply a 1/8 in. (3 mm) bead of Mopar Silicone Sealant (P/N 4318025) to the transaxle oil pan mounting flange. Attach the transaxle oil pan to the transaxle and torque the attaching bolts to 165 in. lbs. (19 Nm).
Q. Install the throttle pressure cable lever and gear shift cable lever on their shafts and tighten their pinch bolts.
R. Lower the vehicle and connect the cruise control, if equipped.
S. Install the battery, PDC and connect the battery cables.
T. Add 4 quarts Mopar Automatic Transmission Fluid Type 7176 (P/N 4467721) through the dipstick opening.
U. Start the engine, and allow to idle for a minimum of one minute. With the parking brake and the service brakes applied, move the gear selector lever momentarily to each gear position. Place the gear selector lever in either park or neutral.
V. Check the transaxle fluid level and add an appropriate amount of transmission fluid to bring the level to 1/8 in. (3 mm) below the ADD mark on dipstick.
W. Recheck the fluid level after the transaxle is at normal operating temperature. The level should be in the HOT range of the dipstick.
X. Repeat Step 1 of this bulletin.
Y. Program the previously recorded radio station presets, and set the clock.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: **21-75-32-93** Throttle Press. Cable, Adj. &
Road Test 0.4 Hrs.
FAILURE CODE: XX - Service Adjustment
TIME ALLOWANCE:
Labor Operation No: 21-75-32-91 Throttle Press. Cable, Adj. & Road Test,
Replace Kickdown Bracket Adj. Throttle Press. Cable & Road
Test 1.0 Hrs.
21-75-32-92 Throttle Press. Cable, Adj. & Road Test,
Replace Kickdown Bracket & Valve Body Adj. Throttle Press.
Cable & Road Test 2.5 Hrs.
FAILURE CODE: P8 - New Part