Guys I need help here. My car is making a electrical buzzing noise coming from the rear under carriage of my 2006 TL. It sounds like its coming from the gas tank so I got it diagnosed as a fuel pump, replaced. Still there, took to a Acura specialty shop they diagnosed it as a purge solenoid valve, replaced. Noise still there. I'm $350 into this problem. Any suggestions would be welcomed and appreciated.

2006 TL 56k

 

take back to original shop and make them fix it no charge.

 

^ +1

If they're not fixing the problem, relay that information and demand a resolution.