If you haven’t figured it out yet, we’re about to cover the replacement of a heater core. Our subject is a ’89 Jeep MJ Comanche, but the steps are basically the same for an XJ Cherokee of similar ...

Jeep XJ Cherokees are known to run hot, especially when taxed for long periods of time by hill climbs or slow-speed rock crawling. However, despite the fact that our ’89 XJ’s 4.0L I-6 was a ...