Neon L4-2.0L SOHC (1995)
Throttle Valve Cable/Linkage: All Technical Service Bulletins
A/T - Harsh or Erratic Shifts
NO: 21-13-94
GROUP: 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.
