I Have A Noisy Sound Under My Car!?!?!?
I HAVE THIS WIERD RATTLING NOISE UNDER MY CAR BUT IT DOES IT ONLY WHEN THE CAR IS HOTT AND I AM ACCELERATING, I DONT KNOW IF IT IS THE CAT" CONVERTER, TRANNY, OR JUST SOME METAL PIECE THAT IS HANGING AROUND WHEN I SWAPPED THE ENGINES???