Mirage L4-1795cc 1.8L SOHC (1994)
Idler Pulley: Customer Interest
A/C Idler Pulley - Pinging Knocking Noise
NO.: TSB-96-55-009
DATE: November, 1996
MODEL: 1993-96 Mirage
SUBJECT:
A/C IDLER PULLEY NOISE
PURPOSE
The A/C idler pulley may cause a pinging or knocking noise during acceleration, especially under moderate load at about 2,000 engine rpm. A new,
redesigned A/C idler pulley is available to eliminate the noise.
AFFECTED VEHICLES
1993-96 Mirage models equipped with 4G93 1.8L engine
PROCEDURE
1.
Confirm that the noise is coming from the A/C idler pulley:
a. With the engine off, remove the A/C compressor drive belt.
CAUTION
This will disable the power steering pump. Use care during test drive to steer the vehicle.
b. Test drive the vehicle. Listen for a pinging or knocking noise during acceleration at about 2,000 engine rpm. If the noise continues, refer to the
diagnosis information in Section 11 and/or Section 17 of the 1993-96 Mirage service manual.
2.
If the noise is not heard during the test drive, replace the A/C idler pulley using the pulley listed in the PARTS INFORMATION section of this
bulletin.
3.
Reinstall the A/C compressor drive belt.
PARTS INFORMATION
Description
Part Number
A/C Idler Pulley
MR315434
WARRANTY INFORMATION
A/C Idler Pulley
Nature Code: 99G
Cause Code: 990
Labor Operation No. 55314310
Time Allowance: 0.4 hr.
Warranty Coverage: 36 months/36,000 miles.
Special Warranty Information: Normal warranty procedures apply.
