A/T - A604 Low Temperature Transmission Failure: Overview

90chrysler16
SUBJECT: Low Temperature
Transmission Failure - A604 Transmissions
NO.: 21-25-90 REV. A

GROUP: TRANSMISSION

DATE: Dec. 31, 1990
MODELS:

1990 (AC) DYNASTY/NEW YORKER LANDAU/SALON
(AY) IMPERIAL/NEW YORKER FIFTH AVENUE (AS) CARAVAN/GRAND CARAVAN/CARAVAN C/V VOYAGER/GRAND VOYAGER (EQUIPPED WITH HEAVY DUTY TRAILER TOW) TOWN & COUNTRY

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN # 21-25-90 WHICH CONTAINED A TYPOGRAPHICAL ERROR AS INDICATED BY >> << ARROWS. PLEASE DISCARD PAGE 1 AND 2 OF THIS BULLETIN AND INSERT THIS NEW PAGE.

NOTE: TECHNICAL SERVICE BULLETIN >> # 21-28-89 << PROVIDED INSTRUCTIONS TO CORRECT THE SUBJECT CONDITION ON CERTAIN 1988 AND 1989 MODEL YEAR VEHICLES. THIS BULLETIN IS BEING ISSUED TO INCLUDE THE ABOVE 1990 MODEL YEAR VEHICLES.

SYMPTOM/CONDITION:

Under certain extremely cold ambient operating temperatures (-20~ F or colder), automatic transmission fluid may get cold enough to resist flow through the transmission oil cooler mounted in front of the engine radiator. The transmission may fail due to lack of lubrication from the restriction if the vehicle is driven long distances at highway speeds.