The Best 1989 Jeep Cherokee Check Engine Light Causes Ideas. The warning lights on your jeep cherokee are messengers that display useful information. A misfire in the engine;
Web 6 reasons why the check engine light may come on. Sometimes the system will get. Web if your jeep cherokee is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor.