Ninety-Eight V6-3800 3.8L (1989)
Memory Calibration Unit: Customer Interest
Engine Controls - Cold Start Stall/TCC Chuggle 35-45
NUMBER:
91-T-185
CORP.REF.NO.: 106503R
DATE:
August 1991
SECTION:
6E3
SUBJECT
COLD START STALL/CHUGGLE AT 35-45 MPH WITH
TORQUE CONVERTER CLUTCH ENGAGED INSTALL REVISED MEM-CAL
MODELS/YEARS
1989-91 EIGHTY-EIGHT AND 1989-90 NINETY-EIGHT
WITH 3800 (VIN C) ENGINE
Some owners of 1989-90 Ninety-Eight and 1989-91 Eighty-Eight models equipped with the 3800 (VIN C) engine may experience one or both of the
following conditions:
^
Engine does not stay running on initial cold start.
^
Chuggle at 35-45 mph with torque converter clutch engaged.
The two conditions are independent of each other, yet it may be possible for both conditions to exist on one vehicle. Follow the information outlined
under the individual heading for that condition:
ENGINE DOES NOT STAY RUNNING ON INITIAL COLD START
If the vehicle's basic engine controls and fuel systems are operating properly, it is important for the technician to familiarize themselves with information
contained in Dealer Technical Bulletin 91-T-16 "Recommended Fuels For Port Fuel Injection Engines". If the condition cannot be repaired by changing
fuel or using currently published service and diagnostic procedures, it may be necessary to install a revised calibration MEM-CAL. Install MEM-CALs
listed in Table A for this condition only.
TABLE "A"
YEAR
MODEL
AXLE RATIO
SCANNER ID
BROADCAST
SERVICE
ALL FED./CALIF.
W/MEMCAL INST.
CODE
P/N
1989-90
98
2.84
5614
AYLA
16165848
1989-91
88
2.84
5614
AYLA
16165848
1989-90
98
2.97
5634
AYLC
16165839
1989-91
88
2.97
5634
AYLC
16165839
TABLE "B"
1989-90
98
2.84
5624
AYLB
16165843
1989-91
88
2.84
5624
AYLB
16165843
1989-90
98
2.97
5644
AYLD
16165829
1989-91
88
2.97
5644
AYLD
16165829
CHUGGLE AT 35-45 MPH WITH TORQUE CONVERTER CLUTCH ENGAGED
