One problem related to engine funny noise has been reported for the 2015 Acura TLX. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Acura TLX based on all problems reported for the 2015 TLX.
Starting in Nov 2019 my Acura Tlx started to spontaneously decelerate and lose engine power when in motion. Error code of p0087 was provided by Acura of milford, CT and was highly suggestive of replacing high pressure fuel pump. The engine fuel pump was replaced in early Dec 2019 however the car continued with loss of power, terrible gas mileage, poor acceleration and multiple warnings illuminated. Acura of milford was contacted and they noted it may be the other fuel pump that needed to be replaced. The second in tank fuel pump was replaced mid Dec 2019 with no improvement. The car was brought to Acura Dec 31, 2019 and they said there was nothing to be found, they reset the p0087 code and did a hard reset. The car still continued with the same symptoms but now with a humming noise present. In Feb 2020, the fuel rail and sensor was replaced, yet still no improvement. The car was taken back to Acura and once again they reset the error code and noted they only found corrosion near the sensor and they cleaned it off. Car was driving much worse now and if it loss power it would not start up unless cranked 15-25 times in a 10 min window. March 2020 the spark plugs were replaced and the car is still not driving right, all symptoms still present and the humming noise is getting louder. This car has loss power while in motion randomly in the middle of traffic, both on street and most dangerously on the highway, embarrassing but thankful to some good samaritans that have exited their vehicle to push me safety on multiple occasions. Acura can not duplicate the problems yet just resets the error code and sends me on my way to call if it happens again. It has been happening frequently since Nov 2019 and no one can tell me what the issue is, even after I have spent thousands of dollars trying to fix this car based off their guesses.