Some 2008-09 Honda Accord models may produce an irritating whining sound from the engine.
According to auto maker, the noise sounds very similar to a turbocharger spooling up, is most prevalent between 2,000 and 3,500 rpmb and is likely due to an improper surface finish on the balancer shaft gears.
Replacing the oil pump and pump O-ring with modified components (part No. 15100-R40-A02 and part No. 91301-R40-A01, respectively) should put a quick end to the noise issue.
Before ordering the new parts, however, remove the drive belt, raise the idle and see if the whine is still there. If it is, go ahead and install the new oil pump and O-ring.
If the noise goes away, this information doesn't apply; continue troubleshooting, starting with the accessory drive belt system, until the cause is revealed.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].