PROM - Engine Detonation Or Chuggle

86pontiac18
Number 85-6 (Gasoline)-66 Date 12/86
Subject: ENGINE DETONATION OR CHUGGLE


1983-84 PHOENIX AND 1983-85 6000 MODELS WITH 2.8L V6 (VIN CODE X) ENGINES AND AUTOMATIC 3 SPEED TRANSMISSIONS AND FEDERAL EMISSIONS

Some subject vehicles equipped with LE2 V6 carbureted engines and automatic transmission 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 TRANSMISSION CALIBRATION PROM

83 Phoenix, 6000 3 Spd. Auto. Federal 1228323
84 Phoenix, 6000 3 Spd. Auto. Federal 1228325
85 6000 3 Spd. Auto. Federal 1228326