Mazda RX-8 Manual page 1717

NO.8 NOISE WHILE OPERATING A/C SYSTEM
8
DESCRIPTION
POSSIBLE CAUSE
Diagnostic procedure
STEP INSPECTION
INSPECT A/C COMPRESSOR SLIPPAGE
NOISE
1
Is there a squeaking or whirling sound
•
(A/C compressor slippage noise)?
INSPECT A/C COMPRESSOR
INTERFERENCE NOISE
2
Is there a rattling or vibrating sound
•
(interference noise)?
INSPECT MAGNETIC CLUTCH
OPERATION NOISE
3
Is there a clicking sound (magnetic clutch
•
operation noise)?
INSPECT DRIVE BELT
4
Inspect drive belt.
•
Is it normal?
•
5 INSPECT DRIVE BELT CONDITION
Noise while operating A/C system.
Noise from magnetic clutch, A/C compressor, hose or refrigerant line.
•
Magnetic clutch operation noise (Step 3)
•
A/C compressor slippage noise (Steps 46)
•
Hose or refrigerant line interference noise (Step 7)
•
ACTION
Yes Go to Step 4.
No Go to next step.
Yes Go to Step 7.
No Go to next step.
Adjust clearance between pressure plate of
Yes magnetic clutch and A/C compressor pulley,
then go to Step 8.
Condition is normal. (Recheck malfunction
No
symptoms.)
Yes Go to next step.
No Adjust or replace drive belt, then go to Step 8.
Remove obstruction, remove oil, or replace
Yes
drive belt, then go to Step 8.
(w) RX-8 - HVAC
Page 88