Engine - Whining Noise Between 2000-3500 RPM
09-084January 22, 2010
Applies To:
2008 Accord - ALL
2009 Accord 2-Door - From VIN 1HGCS1...9A000001 thru 1HGCS1...9A022664
2009 Accord 4-Door - From VIN 1HGCP2...9A000001 thru 1HGCP2...9A175350
Engine Whines Between 2,000 - 3,500 RPM
(Supersedes 09-084, dated November 11, 2009, to revise the information marked by the black bars and asterisks)
*REVISION SUMMARY
Under REPAIR PROCEDURE, the sequence of the oil pump removal in step 10 was changed.*
SYMPTOM
There is an engine whine between 2,000 - 3,500 rpm.
PROBABLE CAUSE
The surface finish on the balancer shaft gears causes a whine when the engine is running.
CORRECTIVE ACTION
Replace the engine oil pump.
PARTS INFORMATION
Oil Drain Bolt Washer: P/N 94109-14000
Oil Pump: P/N 15100-R40-A02
Oil Pump 0-Ring: P/N 91301-R40-A01
REQUIRED MATERIALS
Hondabond HT Liquid Silicone Gasket:
P/N 08718-0004
(One tube repairs about 10 vehicles.)
TOOL INFORMATION
Pin Punch, 6 mm:
Snap-on TIN PPC108LA, or equivalent
Serpentine Belt Tension Tool:
Snap-on TIN ASTHON 1419, or equivalent
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation Number: 111150
Flat Rate Time: 2.7 hours
Failed Part: P/N 13410-R40-A00
Defect Code: 03214
Symptom Code: 09201
Skill Level: Repair Technician
DIAGNOSIS
NOTE:
If you are viewing this service bulletin online and your computer has sound, click on the picture below to hear an example of the engine whine.
1. Verify that the engine makes a louder than normal high-pitched whine from 2,000 - 3,500 rpm. It might sound like a supercharger or turbocharger noise.
2. Remove the accessory drive belt to eliminate any sound from the power steering pump. Monitor the engine coolant temperature gauge while testing because the water pump and alternator are also not operating with the drive belt off.
Is the noise still there? Yes - Go to REPAIR PROCEDURE.
No - This service bulletin does not apply. Continue with normal troubleshooting procedures to find the cause of the noise.
NOTE:
A certain level of whine from the power steering pump is considered normal. It can be heard inside the vehicle with the engine running between 1,200 - 2,000 rpm.
REPAIR PROCEDURE
Oil Pump Removal
1. Drain the engine oil into a clean container for re-use later.
2. Rotate the crankshaft pulley so the top dead center (TDC) mark lines up with the pointer.
3. Remove the splash shield.
4. Remove the bolts holding the engine oil pan.
5. Using a flat-blade screwdriver, separate the oil pan from the engine block in the places shown.
6. To hold the rear balancer shaft, insert a 6 mm pin punch into the maintenance hole in the balancer shaft holder and through the rear balancer shaft.
7. Turn the crankshaft counterclockwise to compress the oil pump chain auto-tensioner.
8. Align the holes on the oil pump auto-tensioner cam lock and the oil pump chain auto-tensioner, then insert a 3 mm diameter pin into the hole. Turn the crankshaft clockwise to secure the pin.
NOTE:
Check the oil pump chain auto-tensioner camshaft position. If the position is not in alignment, set the first cam to the first edge of the rack.
9. Loosen the oil pump sprocket mounting bolt.
*10. Loosen the oil pump chain auto-tensioner bolts, then remove the oil pump sprocket, the oil pump chain auto-tensioner, and the oil pump.*
Oil Pump Installation
11. Confirm that the engine is still at TDC, and adjust it if needed.
12. Align the dowel pin on the rear balancer shaft with the mark on new the oil pump.
13. Insert the 6 mm pin punch into the maintenance hole in the balancer shaft holder and through the rear balancer shaft to hold the shaft in place.
14. Turn the tensioner plate counterclockwise to release the tensioner lock, then push the tensioner arm to set the first cam to the first edge of the rack. Insert a 3 mm pin into the tensioner hole. The chain tensioner must be set up this way to avoid damaging it.
15. Install the oil pump chain auto-tensioner.
16. Apply new engine oil to the threads of the oil pump mounting bolts, then loosely install the oil pump. Install a new 0-ring with the oil pump.
17. Align the oil pump sprocket to the dowel pin on the oil pump assembly. Apply oil to the oil pump sprocket, and tighten the bolt to the specified torque.
18. Remove the 6 mm pin punch from the balancer shaft.
19. Remove the 3 mm pin from the oil pump chain auto-tensioner.
20. Remove all of the old gasket material from the oil pan, the block, the bolts, and the bolt holes.
21. Apply liquid gasket to the oil pan sealing surface, and to the inside edge of the threaded bolt holes. Install the oil pan within 5 minutes of applying the liquid gasket.
NOTE:
^ Apply a 3 mm (0.12 in) diameter bead of liquid gasket along the broken line.
^ If too much time has passed after applying the liquid gasket, remove the old liquid gasket, then reapply new liquid gasket.
22. Install the oil pan. Tighten the bolts in three steps. In the final step, torque all bolts, in sequence, to 12 N.m (8.7 lb-ft). Wipe off any excess liquid gasket on each side of the crankshaft pulley and the flywheel drive plate.
23. Reinstall the splash shield.
24. Refill the engine with the original engine oil.
Recheck the oil level after running the engine.
NOTE:
Wait at least 30 minutes before filling the engine with oil. Do not run the engine for at least 3 hours after installing the oil pan.
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