My car is running real good now but after I park it there is this load clank noise.Not a clunk noise but a clank noise.It will clank anywhere from 15 minutes to 45 minutes after parking and one time only.My workbench is 5 feet away from the nose of the car,and I spend a lot of time in the garage(laptop,frig,phones ,ect.)Anybody else have this issue?(Not ticking,not normal cool down noises)Anybody's thoughts?Many thanks.

 

There's little it could be other than the exhaust making noise as it cools. You might want to check to see if you have any excessive cat heat.

 

Many thanks Shoebox.