New Yorker V6-181 2972cc 3.0L SOHC VIN 3 FI (1989)
Powertrain Control Module: Customer Interest
ECM - Engine Die Out at Low Speeds
NO.: 18-11-91
GROUP:
DRIVEABILITY
DATE:
Aug. 26, 1991
SUBJECT:
Start-Stall and/or Decel Dieout During Parking Lot (Low Speed) Maneuvers - 3.0L & 3.3L Engines
MODELS:
1989-90
(AC)
DYNASTY/NEW YORKER LANDAU/SALON
(AQ)
CHRYSLER'S TC
(AS)
CARAVAN/GRAND CARAVAN/CARAVAN C/V
VOYAGER/GRAND VOYAGER/TOWN & COUNTRY
(AY)
IMPERIAL/NEW YORKER FIFTH AVENUE
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-31-90, DATED 12/17/90 WHICH SHOULD BE REMOVED FROM
YOUR FILES. ALL REVISIONS ARE HIGHLIGHTED WITH >> ARROWS <<.
SYMPTOM/CONDITION:
Vehicle may exhibit either or both of the following conditions:
Parking lot (low speed) maneuvering dieout: Throttle is opened briefly to move vehicle and engine dies out when throttle is closed.
Start up dieout: Engine will start but fail to run up to idle RPM, or it will initially run up to idle RPM but fail to continue idling. Engine will run
normally if throttle is held open.
These conditions will occur only on vehicles with non-cycling AC compressor when the AC is left on for extended periods of time and only when the
ambient temperature is above 40~ F (4~ C).
DIAGNOSIS:
Connect a DRB II tester to the vehicle diagnostic connector.
1.
With the engine at normal operating temperature and with the AC on, record the AIS position while idling in DRIVE. Then, with the left foot on the
brake and parking brake engaged, open throttle slightly (less than 1/4 throttle) and again record the AIS position. Is the AIS position with the
throttle open less than the AIS position at idle in DRIVE?
2.
With the engine at normal operating temperature and the AC off, idle in DRIVE for five minutes to allow AIS to update itself. Again, with left foot
on the brake and the parking brake engaged, open throttle slightly and record the AIS position. Is the AIS position with the throttle open less than
the AIS position at idle in DRIVE?
3.
If the answer to Step 1 is "Yes" and the answer to Step 2 is "No", proceed with the following repair procedure.
PARTS REQUIRED:
1
Single Module Engine Controller (SMEC)
1989
3.0L Engine
AS Body, Federal
4639386
AS Body, California
4639001
AC Body, Federal
4639382
AC Body, California
4639384
1990
3.0L Engine
>> AS Body, Federal (except Town & Country)
4639422 <<
>> AS Body, California (except Town & Country)
4639424 <<
AC & AY Bodies, Federal
4639398
AC & AY Bodies, California
4639400
AQ Body, Federal
4650386