The powertrain control module (PCM) in your Jeep Wrangler – often referred to as your engine’s “computer” – acts as the brain of your vehicle’s engine. More specifically, the PCM in your Jeep is ...

Upon first acquiring our 4.0L-equipped '01 Jeep Wrangler TJ, we were extremely impressed with its on- and off-road performance. The six-cylinder mill pushed the stock-size tires anywhere we wanted to ...

Driving an underpowered Jeep on the trail or down the road is something that people have been doing since the first army prototypes were tested. Even though V-8 power was made an option for some Jeeps ...