Cutlass V6-231 3.8L VIN A 2-bbl (1982)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine - Chuggle/Tip In/Cold Hesitation
SUBJECT
DRIVEABILITY CORRECTIONS 1982 CUTLASS SUPREME EQUIPPED WITH 3.8L (LD5) FEDERAL ENGINES
NUMBER:
82-T-6
DATE:
December 21, 1981
A new calibrated PROM and EGR valve have been released for production and service on 1982 Cutlass Supremes equipped with Federal 3.8L engines.
These parts are to be used for dealer correction of any one of or combination of the conditions listed below, when it has been determined that affected
systems are within specification and are functioning normally.
^
Chuggle at 40-45 MPH (Use PROM only)
^
Tip-in Hesitation (Use EGR valve only)
^
Cold Driveability Hesitation (Use PROM and EGR)
Before a decision is made to install a PROM and/or an EGR valve, vehicle should be roadtested, if possible, for the owner described conditions and
vehicle systems checked to determine if adjustments are within specifications.
Unless all areas listed on the checklist are correct, a PROM and/or EGR valve will not be effective for the purpose intended. Use the checklist below for
assistance when necessary.
Any time one of the three (3) or all three conditions are encountered and the attached checklist did not assist in curing the condition, use the PROM
and/or EGR, or use both for all three (3) conditions. ONE PART CAN BE INSTALLED WITHOUT THE OTHER.
CHUGGLE CHECK LIST
^
Park-Neutral Back up Light Switch Adjustment
^
Base Ignition Timing and Total Advance
^
EGR Valve Operation
^
HEI Operation at Problem Speeds
-
Includes checking for correct Distributor Wave Washer
^
Spark Plugs and Plug Wires
^
Speedometer Need for Fluctuation (Sticking or Kinked Cable and/or Speedo Head will cause Vehicle Speed Sensor (VSS) to Engage-Disengage
TCC)
^
Evaporative Emission Control System (EECS)
-
Purge Solenoid Operation
-
Hoses and Correct Hose Connection
-
Canister Vent Valve Operation
HESITATION CHECK LIST
^
EGR Valve System Operation
^
Accelerator Pump System Operation
-
Includes checking discharge check ball seating
^
Vacuum Hoses, Fittings and Connections
^
Ignition Timing
^
C-3 Wiring Proximity to High Voltage Wiring
^
EFE System Operation
^
T.A.C. System Operation
COLD DRIVEABILITY HESITATION CHECK LIST
^
EGR Valve Operation
^
Park-Neutral Back up Light Switch Adjustment
^
Thermac air cleaner (TAC) Operation
^
H.E.I. Operation
^
Evaporative Emission Control System (EECS)
-
Purge Solenoid Operations
-
Hoses and Connect Hose Connections
-
Canister Vent Valve Operation
^
Base Timing and Electronic Spark Timing (EST)
^
Early Fuel Evaporation (EFE) System
^
Spark Plugs and Plug Wires
