Magnum V6-3.5L VIN V (2006)
Compressor Clutch Hub: Customer Interest
A/C - Knocking Noise Heard at Idle With A/C ON
NUMBER: 24-007-05
GROUP: Heating & A/C
DATE: April 2, 2005
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. DO NOT ORDER PARTS OR PERFORM ANY ACTIONS RELATED TO THIS
BULLETIN UNTIL MAY 2, 2005.
SUBJECT:
Knock Sound Heard At Idle With A/C On
OVERVIEW:
This bulletin involves installing a revised A/C compressor clutch hub and pulley.
MODELS:
2005-2006 (LX) 300/Charger/Magnum
NOTE:
This bulletin applies to vehicle equipped with a 3.5L Engine (Sales Code EGG) and built prior to July 1, 2005 (MDH 0701XX).
SYMPTOM/CONDITION:
Occasional or intermittent underhood knocking sound which occurs only with the A/C on and the engine at idle. The knocking sound is a light rapid
knocking/tapping sound occurring at about 3 to 5 times per second.
DIAGNOSIS:
NOTE:
Due to the intermittent nature of this complaint, the following diagnosis must first be run to make sure the knocking noise is not related to
another source.
1.
Run the engine with A/C off for approximately 10 minutes or until engine has reached normal idle conditions (approximately 600 rpm).
2.
While sitting in the passenger compartment, listen for evidence of the knocking noise with the A/C off. If no knocking noise is heard, perform the
Repair Procedure.
3.
If a knocking sound is heard, this bulletin does not apply and further diagnosis is required.
SPECIAL TOOLS/EQUIPMENT REQUIRED
PARTS REQUIRED
REPAIR PROCEDURE:
