Hi,
If it is sensor 2, then you are correct. It will be after the converter. If it is running rich, check to make sure the fuel pressure is within spec. If it is, then we will need to check the coolant temp sensor as well as the injectors.
Here is a link that shows how fuel pressure it checked:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Also, here are the fuel pressure specs:
2004 Jeep Truck Liberty 4WD V6-3.7L VIN K
Pressure, Vacuum and Temperature
Vehicle Powertrain Management Fuel Delivery and Air Induction Fuel Pump Fuel Pressure Specifications Pressure, Vacuum and Temperature
PRESSURE, VACUUM AND TEMPERATURE
FUEL SYSTEM PRESSURE
If equipped with JTEC Powertrain Control Module using 3 electrical connectors: 339 kPa ± 34 kPa (49.2 psi ± 2 psi)
If equipped with NGC Powertrain Control Module using 4 electrical connectors: 400 kPa ± 34 kPa (58 psi ± 5 psi)
Let me know what you find or if you have other questions.
Take care,
Joe
Wednesday, March 10th, 2021 AT 4:48 PM