Rough Engine Idle, Misfire, Possible DTC P0300 (Replace Spark Plug Boot Assem). Pontiac Grand Am 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

1999-2000 Toyota Cavalier

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


(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

Part Number	Description
12132224	Spark Plug Boot Assembly

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation	Description	Labor Time
J4226	Spark Plug -- Replace	Use Published Labor Time
J4403	Integrated Direct Ignition system - Repace spark plug connector kit	Use Published Labor Time