A/T - Harsh or Erratic Shifts
NO: 21-13-94GROUP: Transmission
DATE: Aug. 5, 1994
SUBJECT:
Automatic Transmission Harsh or Erratic Shifts
MODELS:
1995 (PL) Neon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH AN AUTOMATIC TRANSMISSION.
SYMPTOM/CONDITION:
Erratic, late, or harsh automatic transmission shifts.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRBIII) with the appropriate Diagnostic Procedure Manual, verify that all engine systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order for future reference and repair as necessary. If no codes are present and all systems are functioning correctly, proceed with the following:
1. Road test the vehicle by slowly accelerating to 18 to 20 miles per hour and maintain vehicle speed for 2 to 3 seconds.
2. Check the engine RPM'S. If the RPM's are 1800 or less, then an upshift has occurred and the erratic shift condition must be diagnosed following the Diagnostic Chart shown on Page 21-36 of the Neon Service Manual (Publication No. 81-270-5025).
If the engine speed is greater than 1800 RPM'S, the transmission shift point is improper. This indicates that the transmission throttle pressure kick-down cable may be out of adjustment. Proceed to the repair listed in this bulletin.
PARTS REQUIRED:
No parts are required for this repair.
REPAIR PROCEDURE:
This bulletin involves adjusting the transmission throttle pressure kick-down cable.
NOTE:
THE VEHICLE ENGINE MUST BE AT NORMAL OPERATING TEMPERATURES TO PROPERLY PERFORM THIS PROCEDURE.
1. Release the cable adjuster lock (cross-lock) on the throttle pressure cable assembly.
NOTE:
TO ENSURE PROPER ADJUSTMENT, THE CABLE MUST BE FREE TO SLIDE ALL THE WAY TOWARD THE ENGINE, AGAINST ITS STOP, AFTER THE CROSS-LOCK IS RELEASED.
2. Move the transaxle throttle control lever fully clockwise, against its internal stop, and press the cross-lock downward into the locked position. This completes the adjustment.
3. Test cable freedom of operation by moving the transaxle throttle lever forward (counterclockwise). Then slowly release it to confirm it will return fully rearward (clockwise).
NOTE:
NO LUBRICATION IS REQUIRED FOR ANY COMPONENT OF THE THROTTLE CABLE SYSTEM.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 21-75-32-90 0.2 Hrs.
FAILURE CODE: XX - Service Adjustment