Engine - Rough Idle/Misfire/Possible DTC P0300

Bulletin No.:
00-06-04-009

File In Section:
06 - Engine/Propulsion System

Date:
February, 2000

Subject:
Rough Engine Idle, Misfire, Possible DTC P0300 (Replace Spark Plug Boot Assembly)

Models:
1999 Chevrolet Malibu
1999-2000 Chevrolet Cavalier
1999-2000 Oldsmobile Alero
1999-2000 Pontiac Grand Am, Sunfire
with 2.4 L Engine (VIN T - RPO LD9)

Condition

Some customers may comment on a rough engine idle and/or misfire. The Check Engine Light (CEL) may or may not be illuminated, and DTC P0300 may or may not be set under rough idle conditions.

Cause

Condition may be due to a missing spark plug boot spring.

Correction




Legend
(1) Spark Plug Boot Spring





Check for presence of the spark plug boot spring (1) by removing each boot and checking for spring presence at the boot to coil tower connection If the spring is missing, replace the spark plug boot assembly





Parts Information

Parts are currently available from GMSPO





Warranty Information

For vehicles repaired under warranty, use chart.