Apples To:2009 TSX – ALL
2010 TSX L4 – From VIN JH4CU2...AC000001 thru JH4CU2...AC009053
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiR2XTXZW0Mu1zYyhzrlrvIIqBlUiwwdzJOjHKVQdvLI257In0xsSclgI2zACSv8ggxUCoDwmk2iFTsoiwgVxWNREmnRvkKWLFXDNJ75KKdc9zG5RM-NwfrakxHetN0_C7rWrR9h41tZRk/s400/2009_acura_tsx_press_crash.jpg)
SYMPTOM:The engine pings during moderate to heavy acceleration.
PROBABLE CAUSE:The PCM software, combined with knock sensor sensitivity, may not adjust the ignition timing as expected.
NOTE: This condition does not cause internal engine damage. Some engine ping is a desired characteristic for optimal performance and fuel economy.
CORRECTIVE ACTION:Replace the knock sensor, then update the PGM-FI software with the HDS. If you’re working on a vehicle with A/T, also update the A/T software.
NOTE: On vehicles with A/T, you must update the A/T software to complete the repair.
Click here for more details.
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