Neon R/T L4-2.0L VIN F HO (2001)
PROM - Programmable Read Only Memory: Customer Interest
A/C - Poor Performance/Expansion Valve Noise
NUMBER: 24-008-01
GROUP: Heating & A/C
DATE: Jun. 22, 2001
SUBJECT:
Poor A/C Performance/Expansion Valve Noise
OVERVIEW:
This bulletin involves reprogramming the Powertrain Control Module (PCM) with new software and reducing the amount of R134A refrigerant in the
system to 765 grams (27 oz. or 1.69 lbs.).
MODELS:
2001 (PL) Neon
2001 (P2) Neon (International Markets)
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE JUNE 11, 2001 (MDH O611XX).
SYMPTOM/CONDITION:
Some vehicles may exhibit one or both of the following symptoms:
^
Under high ambient conditions, typically above 38°C. (100° F.), the A/C compressor may cycle off and on repeatedly producing poor A/C
performance immediately after a hot engine restart or during city driving.
^
Under similar ambient conditions listed above the A/C expansion valve may be noisy (hum sound).
DIAGNOSIS:
If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If
the condition(s) can be duplicated or are described by the customer, perform the Repair Procedure.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
NOTE:
THE MDS2 MUST BE OPERATING WITH CIS CD2085 OR HIGHER.
REPAIR PROCEDURE:
