The vibration is noticeable while in park and rev at 1700 rpm. While running 1st and 2nd gears it's barely noticeable but in 3rd it really vibrates. Now with that said... the vibration will come and go but mostly it's there. I have had it in 3 different shops and they have replaced alternator. power steering, drive belt, harmonic balancer, fuel filter, u-joints, ball joints, tie rod ends, shocks and struts, plugs and wires, coil, tps and transmission mount. What next??? It's in the shop and they think it's the torque converter. What do you think, is there a known problem with this make and model?

Vehicle Parts & Accessories - Thule - 2004 Ford Mustang - Coupe - Base Rack System