I hear a knocking sound from under the passenger floorboard during warm idle. I haven't been under the car to check it out, but I suspect something in the exhaust system is resonating or bumping against the chassis. On cold days, it can be very noticeable and annoying. The engine is smooth as silk, however. I cannot hear the noise from outside the car (too much other noise), only from inside.

On the other hand, I might need to recalibrate the radiator hoses.

 

really!??!! we have flux capacitators?!?!?! i had no idea... that is amazing...where can i pick up a new one for better performance!?! Ebay or something??