ok so im having problems with my 2001 stalling it bogs down really bad when i press down on gas but when i take my foot off of the gass acts like it wants to go. i replaced fule fuse also dealer put new fuel pump on about 2 years ago. had catalytic converter checked and thats ok but am getting the smell when it bogs down and i push gas it also backfires sometimes when i do this. please help