Neon L4-2.0L SOHC (1995)
PROM - Programmable Read Only Memory: Customer Interest
PCM - Steering Column Shake at Idle
NO: 18-25-94
GROUP: Vehicle Performance
EFFECTIVE DATE: Dec. 2, 1994
SUBJECT:
Improved Idle Quality on Cold Start Up
MODELS:
1995 (PL) Neon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO OCT. 10, 1994 (MDH 10-10-XX).
SYMPTOM/CONDITION:
Cold start up steering column shake at idle. Condition most noticeable around ambient temperatures of 40 degrees fahrenheit or below.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) 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 repair.
EQUIPMENT/PARTS REQUIRED:
REPAIR PROCEDURE:
NOTE:
THIS BULLETIN INVOLVES REPROGRAMMING PCM'S ON VEHICLES BUILT ON OR AFTER AUGUST 6, 1994, OR REPLACING
PCM'S ON VEHICLES BUILT PRIOR TO AUGUST 5, 1994.
VEHICLES BUILT PRIOR TO AUGUST 5, 1994:
This repair involves replacing the Powertrain Control Module with a new one that incorporates revised software.
NOTE:
VEHICLES BUILT PRIOR TO APRIL 6, 1994 MAY NOT BE EQUIPPED WITH A STEERING COLUMN DAMPER. TECHNICAL SERVICE
BULLETIN 18-07-94 REV. A, DATED JUL. 22, 1994, PROVIDED THE PROCEDURE TO INSTALL A DAMPER WEIGHT, COOLING
MODULE BUSHINGS, AND A SOFTWARE CHANGE TO THE PCM TO IMPROVE IDLE ROUGHNESS. ON THOSE VEHICLES BUILT
PRIOR TO APRIL 6, 1994 (MDH 04-06-XX), VERIFY THAT TSB 18-07-94 REV. A WAS APPLIED PRIOR TO PROCEEDING WITH THE
REPAIR LISTED IN THIS SERVICE BULLETIN.
1.
Remove the PCM as outlined on Page 8D - 1 in the 1995 Neon Service Manual Supplement (Publication No. 81-270-5025A), and replace it with
the appropriate unit called out in "PARTS REQUIRED".
NOTE:
THE FOLLOWING STEP IS REQUIRED BY LAW.
