Engine - Rough Idle or Stalling at Idle
87chevy22Number: 88-154
Section: 6E
Date: OCT., 1987
Subject: ROUGH IDLE OR STALLING AT IDLE
Model and Year: 1982 CAVALIER 1.8L (VIN G) ENGINE
1983 S/T TRUCK 2.0L (VIN Y) ENGINE
TO: ALL CHEVROLET DEALERS
The vehicles and engine combinations indicated above may experience a rough idle condition (at idle or off-idle) that is generated by a lean mixture. Normal service manual diagnostic procedure should be followed to isolate the cause of the lean mixture.
The EFE isolator/gasket below the carburetor should be checked for vacuum leakage, contributing to the lean condition. If the EFE isolator/gasket is identified as the vacuum leak source, then the isolator/gasket should be replaced per service manual procedure.
The EFE isolator/gasket (P/N 14018761) is available from GMSPO on their "Target Program" and is covered by GM's 5 yr/50,000 mile emission warranty.
Use applicable labor operation and time.