Cutlass V6-231 3.8L VIN A 2-bbl (1982)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Chuggle/Tip In Hesitation
SUBJECT
DRIVEABILITY CORRECTIONS 1982 CUTLASS SUPREME AND CUTLASS CRUISER WAGONS WITH 3.8L (LD5) CALIFORNIA ENGINES
NUMBER:
82-T-6A
DATE:
February 26, 1982
A newly calibrated PROM, and EGR Valve are being released for the correction of any one of or combination of the conditions listed below on 1982
California Cutlass Supreme and Cutlass Cruiser wagons equipped with 3.8L V-6 engines, when it has been determined that affected systems are within
specifications and functioning normally.
A.
Chuggle at 4O-45 MPH
B.
Tip-in Hesitation
Before a decision is made to install both parts, the car should be roadtested for the owner described conditions. Unless all other areas are correct, the
PROM and EGR Valve will not be effective for the purpose intended. Use the following checklists for additional assistance if necessary.
A.
Condition: Chuggle also referred to as surge, is most noticeable at 40-45 MPH and should not be confused with "Freeway Hop", a common
condition in many areas. The PROM change, raises the converter clutch engage speed to 50 MPH from 41 MPH.
B.
Condition: Tip-in Hesitation may be experienced during either hot or cold operation while going through a light or moderate acceleration period
from a stopped position.
If any one or combination of conditions exist, install both parts, PROM and EGR Valve.
CHUGGLE CHECK LIST
^
Park-Neutral Back Up Light Switch Adjustment
^
Base Ignition Timing and Total Advance
^
Spark Plugs and Plug Wires
^
HEI Operation At Problem Speeds
-
Includes Checking For Correct Distributor Wave Washer
^
Speedometer Needle For Fluctuation (Sticking or Kinked Cable and/or Speedometer Head will cause Vehicle Speed Sensor (VSS) To Engage -
Disengage TCC)
^
Evaporative Emission Control System (EECS)
-
Purge Solenoid Operation
-
Hoses and Correct Hose Connections
-
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
^
Carburetor Float Level
^
Computer Command Control Wiring Proximity To High Voltage Wiring
^
EFE System Operation
^
T. A. C. System Operation
^
Carburetor For Lean Operation Overheating - Cooling System
^
Incorrect Spark Plugs
^
Bad Fuel
^
EGR Override Relay Circuit
PARTS INFORMATION
Obtain the following two (2) parts from your normal GM Parts Division warehouse:
Original Equipment No.
PROM ID
^
PROM No. 1226031 10626864 BBN
^
EGR Valve No. 17079013
