1996 Jeep Cherokee Check Engine Light

Not a good idea! Do this and post codes you get.
Is your check engine light on? If yes turn the key from off to on three times, on the fourth one leave it in the on position, the codes will display on the odometer, write em down and post em... Some do flash codes on check engine light instead...
turn the key from off to on three times, on the fourth one leave it in the on position, count the flashes...22 would flash as 2 blinks, then a short puase, then 2 more blinks...if several codes are stored, the pause is longer between codes, code 55 will be the last code...do this and post all codes found...