Does it have engine codes? If so i would start there go to autozpne and get ur codes read free then post them up so we can help. Ps.....autozone isnt ase certified so i wouldnt really listen to them they may sell u something that wont fix the problem and may make it worse. I.e that coolant stop leak crap.....doeant work amd creates more problems like clogged water passages.
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.