Ive noticed that my 02 gt will stumble a tiny bit at idle and a little if I hold the gas at say 1500rpms. Its not bad but its noticable. Also the motor shakes around a little, the idle is a tad rough too. Im about to do a tune up but is there anything I should check before I start throwing parts at this car? Also theres a clicking sound coming from the passengers side that increases with vehicle speed, can anyone even speculate what that could be? Thanks in advance. Also no its not throwing any codes only bs ones like airbag light fault and seatbelt fault.