America Honda Motor Co. reports that all 2009 Acura TSX vehicles, as well as 2010 models built from VIN JH4CU2…AC000001 through JH4CU2…AC009053, may develop an engine ping under moderate-to-heavy acceleration.
The luxury car maker attributes the condition to a faulty knock sensor combined with software incompatibility issues in the power-train control module (PCM). Replacing the knock sensor with an improved design, part No. 30530-RL5-A01, and reprogramming the PCM with updated software should help eliminate further trouble. If the car has an automatic transmission, you'll also have to update the transmission programming. Check with a dealer for the specifics of the flashes.
"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].