Campaign - Mass Air Flow Sensor Replacement: Overview

86olds7

SUBJECT MASS AIR FLOW SENSOR FAILURE NUMBER: 87-E-01

DATE: Sept. 23, 1986

MODELS/YEARS 1987 NINETY-EIGHT, DELTA 88, CUTLASS CIERA SECTION: 6E
AND CALAIS MODELS
CONDITION

General Motors has determined that certain 1987 Oldsmobiles equipped with 3.0L or 3.8L fuel injected engines were assembled with a mass air flow (MAF) sensor that may contain cracked sensor foils.

It is possible that this MAF sensor could cause the vehicle's "Service Engine Soon" light to turn on (Trouble Code 34), and emission system to operate in the backup mode. Also, the engine may intermittently not stay running at the closed throttle position, with no "Service Engine Soon" light indication..

VEHICLES INVOLVED

Involved are certain 1987 Delta 88, Ninety-Eight, Cutlass Ciera, and Calais models equipped with 3.0L (VIN Code L) or 3.8L (VIN Code 3) fuel injected engines within the following vehicle breakpoints:

Through And
Model Engine Plant From Including

Ninety-Eight 3.8L Orion (4) H4300001 H4304917
(LG3)

Delta 88 3.8L Willow Run (W) HW300001 HW305897
(LG3)

Cutlass Ciera 3.8L Doraville (D) HD300796 HD302753
(LG3)

Calais 3.0L Lansing (M) HM200001 HM201870
(LN7)