New Yorker V6-201 3.3L VIN R FI (1992)
Evaporator Core: Customer Interest
AC Ducts - Emit Odors
NO.: 24-21-93
GROUP: Air Conditioning
DATE: Sep. 3, 1993
SUBJECT:
Air Conditioning Ducts Emits Odor
NOTE:
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 24-12-92. ALL REVISIONS ARE HIGHLIGHTED WITH
**ASTERISKS**
MODELS:
1992**- 1993**
(AC)
Dynasty/New Yorker Salon
(built after Jan. 31, 1992 - MDH 0131XX)
1992**- 1994**
(AS)
Caravan/Grand Caravan/Caravan CV
Voyager/Grand Voyager/Town & Country
1992**- 1993**
(AY)
Imperial/New Yorker Fifth Avenue
(built after Jan. 31, 1992 - MDH 0131XX)
SYMPTOM/CONDITION:
Some vehicles may emit an odor from the air conditioning ducts. The odor is most noticeable when the A/C system is first turned on.
Two causes for A/C related odors are possible, and are covered separately below:
CAUSE AND CORRECTION - VEHICLES WITH LESS THAN 12,000 MILES
**On some vehicles with the plate fin A/C evaporator, the manufacturing process occasionally results in an excessive amount of corrosion protection
coating being applied on the evaporator external surfaces.** A heavy coating can result in an odor from the evaporator fins, especially when dry fins
become wet from condensation.
To correct this condition, the evaporator coil in the A/C unit must be replaced. Refer to the appropriate service manual for the replacement procedure.
CAUSE AND CORRECTION - VEHICLES IN SERVICE FOR 12 MONTHS OR MORE
Offensive odors from air conditioners can sometimes occur in vehicles that have been in extended use resulting from possible accumulation of foreign
matter in the A/C unit. This condition is more likely to occur in vehicles that have been in extended use in humid climates. To correct this condition, the
internal surfaces of the A/C air handling system will have to be cleaned by the repair procedure outlined in this bulletin.
PARTS AND EQUIPMENT REQUIRED:
VEHICLES WITH LESS THAN 12,000 MILES
1
Coil, A/C Evaporator
AS 1992
4723069
AS 1993 - 1994
4474842
AC & AY
4677011
VEHICLES IN SERVICE FOR 12 MONTHS OR MORE
1
A/C Evaporator Cleaner
4728942
1
Reusable Applicator
4740319
1
Pair Of Rubber Gloves
1
Pair Of Safety Glasses
REPAIR PROCEDURE:
This bulletin involves cleaning and disinfecting the A/C evaporator and housing.
NOTE:
FOLLOW ALL CAUTIONS AND WARNINGS SUPPLIED WITH THE A/C EVAPORATOR CLEANER.