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This is an effort to share experience and knowledge related to replacing a Liberty 3.7L engine specifically for a 2003, but I am 99.7% confident that it also applies to 2002 and 2004. Theoretically, this checklist should also apply to *all* Chrysler PowerTech 3.7L V6 motors regardless of...

The Fuel Rail for *all* V6 3.7L Jeep Libertys (and pretty much anything that ever used the 3.7 V6 Powertech engine https://en.wikipedia.org/wiki/Chrysler_PowerTech_engine) requires a special tool to disconnect the main fuel line feeder hose that attaches at the rail. According to the Jeep...

I am methodically updating all of my fuel/ignition/emission-related circuits, connectors, controls and sensors. The one consistent factor that I have encountered is that AMZN has nothing to offer but bait-and-switch garbage parts. My go-to for Crown Automotive parts is now Quadratec...

Heads up. I have a problem with "rich" fuel trims, both short and long. Background: I had elected to replace all of the emission-related sensors (MAP, ECT, IAT, etc) and fuel-air mix controllers (Intake Air Control Valve, Throttle Position sensor, Evap purge) that I could do myself. In the...

This thread is an education in how to rebuild complete wire harnesses for complete KJ fuel injector and ignition coil circuits. In hindsight, this was actually a very simple effort after subtracting out a lot of trial and error. What follows is the streamlined "How To" broken out into 8...

I'll share what's going on, and if anyone has anything to contribute I will be most grateful. Back ground: 1. 2003 Jeep Liberty Sport 4WD 3.7L 2. Blew a ring and trashed the engine 3. Had a Goodyear shop (excellent credentials, and past personal experience with them so I trust them) install a...