Engine - Detonation or Chuggle
Number: 86-213Section: 6E
Date: JAN., 1987
Subject: ENGINE DETONATION OR CHUGGLE ON 2.8L V6 ENGINES (CODE X)
Model and Year: 1983-85 CITATION WITH 2.8L V-6 (VIN CODE X) 3-SPEED AUTOMATIC TRANSMISSION AND FEDERAL EMISSIONS 1983-86 CELEBRITY WITH 2.8L V-6 (VIN CODE X) 3-SPEED AUTOMATIC TRANSMISSION AND FEDERAL EMISSIONS
TO: ALL CHEVROLET DEALERS
Some Celebrity and Citations equipped with 2.8L V6 carbureted engines may exhibit engine detonation or chuggle. If normal service procedures in the Service Manual (Section 6E1, Section B) do not correct the condition, new service PROMS with revised calibrations are now available.
The model applications are:
MODEL EMISSIONS SERVICE
YEAR MODELS TRANS. CALIBRATION PROM
1983 Celebrity, Citation 3-spd Auto Federal 1228323
1984 Celebrity, Citation 3-spd Auto Federal 1228325
1985 Celebrity, Citation 3-spd Auto Federal 1228326
1986 Celebrity 3-spd Auto Federal 1228326