ECM - MIL ON/False Code 43
87olds2SUBJECT FALSE CODE 43 NUMBER: 87-T-12
DATE: February 18, 1987
1987 FIRENZA AND CUTLASS CIERA
MODELS/YEARS MODELS WITH 2.8L PFI ENGINE
(VIN CODE W) SECTION: 6E
Some 1987 Firenza and Cutlass Ciera models equipped with the 2.8L PFI engine may set a false Code 43. The false code will be set under a deep, part throttle crowd between 3400 and 4400 engine rpm. As a result of setting this code, the "service engine soon" light will come on and generally will stay on until the ignition key is turned off. A Code 43 will be stored.
To service customer complaints, perform service diagnosis for Code 43 as defined in the Service Manual, section 6E3, to correct any of the following conditions: faulty knock sensor, "intermittents", faulty connections, open or shorted wiring problems, or MEM-CAL.
To correct the MEM-CAL, a new part number MEM-CAL will be required.
The part numbers and model applications are shown in the following chart:
Transaxle Emission Service Parts
Models Trans. Ratio Calibration Identification Label Code MEM-CAL
Cutlass Ciera Auto 3-Sp. 2.84 Federal/ F17 16072936
Canadian
Cutlass Ciera Auto 3-Sp. 2.84 California F17 16072946
Cutlass Ciera Auto 3-Sp. 3.18 California F75 16072967
Cutlass Ciera Auto 4-Sp. 3.33 Federal/ GX3 16072977
Canadian
Cutlass Ciera Auto 4-Sp. 3.33 California GX3 16072987
Cutlass Cruiser Auto 3-Sp. 3.18 California F75 16073017
Cutlass Cruiser Auto 4-Sp. 3.33 Federal/ GX3 16073027
Canadian
Cutlass Cruiser Auto 4-Sp. 3.33 California GX3 16073135
Cutlass Ciera Auto 3-Sp. 3.18 Federal/ F75 16072957
Canadian
Cutlass Cruiser Auto 3-Sp. 3.18 Federal/ F75 16073007
Canadian
Firenza Auto 3-Sp. 3.18 Federal F75 16073192
Firenza Auto 3-Sp. 3.18 California F75 16073196
Transaxle Emission Service Parts
Models Trans. Ratio Calibration Identification Label Code MEM-CAL
Firenza Auto 3-Sp. 3.18 Federal F75 and T46 16073202
Firenza Auto 3-Sp. 3.18 California F75 and T46 16073206
Firenza Man 5-Sp. 3.61 Federal FX8 16073212
Firenza Man 5-Sp. 3.61 California FX8 16073216
Firenza Man 5-Sp. 3.61 Federal FX8 and T46 16073222
Firenza Man. 5-Sp. 3.61 California FX8 and T46 16073226
Use applicable labor time and operation numbers.