Problem

OK guys here is the situation:

After my car is warmed up and has been running for a while I will stop in to see a customer and come back to my car like 10 or 15 minutes later. When I start my car I hear some weird grinding noise coming from what seems to be the back side of my car. It also idols funny for a few seconds until I get going again. That is the only time I hear this funny grinding noise. I really don't know what it could be so if someone from here has a clue, that would be awesome.

Thanks,

fuel pump, i think its more of a gurgling sound

its normal, warranty won't replace it

and the part is completley functional, it's just noisy and annoying