Re: 2001 jeep cherokee 4.7
Welcome to the garage.
Does it always idle rough, warm and cold?
You changed the idle air control stepper motor, but did you clean the air canal as well?
Did you use the standard copper core plugs? Jeeps donīt like fancy plugs. Did you check if there is any fault code set? You can do the keydance to check: ignition switch off/run three times and leave in run at the third time. The odometer will show DONE when all ok, or a fault code(s).