Jeep 4.0L Index of Articles

How To Test The Rear O2 Sensor Heater (1996 4.0L Jeep Cherokee)

How To Test The Rear O2 Sensor Heater (1996 4.0L Jeep Cherokee)

In this tutorial I'll show you how to test the rear (downstream) oxygen sensor's heater element with a multimeter. With your test results you'll able to find out it's bad and behind the trouble code P0135 lighting up the check engine light on...   read more >>

How To Test The Front O2 Sensor Heater (1996 4.0L Jeep Cherokee)

How To Test The Front O2 Sensor Heater (1996 4.0L Jeep Cherokee)

In this tutorial I'll show you how to test the front oxygen sensor's heater element with a multimeter. With your test results you'll able to find out it's bad and behind the trouble code P0135 lighting up the check engine light on your 1996 4.0L...   read more >>

Oxygen Sensor Circuit Wiring Diagram (1993-1995 4.0L Jeep Cherokee)

Oxygen Sensor Circuit Wiring Diagram (1993-1995 4.0L Jeep Cherokee)

APPLIES TO: This oxygen sensor circuit wiring diagram applies to the following vehicles: 1993, 1994, 1995 4.0L Jeep Cherokee. This oxygen sensor circuit wiring diagram includes the following circuits: Fuel pump relay circuit....   read more >>

How To Test The Crankshaft Position Sensor (1997-1998 4.0L Jeep Cherokee)

How To Test The Crankshaft Position Sensor (1997-1998 4.0L Jeep Cherokee)

In this tutorial I'll show you how to test the crankshaft position (CKP) sensor with a simple multimeter and in a step-by-step way. You'll be able to easily find out if it's bad and causing your 4.0L Jeep Cherokee no-start problem....   read more >>

How To Test The Crankshaft Position Sensor (1996 4.0L Jeep Cherokee)

How To Test The Crankshaft Position Sensor (1996 4.0L Jeep Cherokee)

Testing the crankshaft position (CKP) sensor, on your 1996 4.0L Jeep Cherokee, is not difficult. In this tutorial I'll show you how to do it with step-by-step test instructions. You'll be able to easily find out if it's bad or not....   read more >>

How To Test The O2 Sensor Heater (1993-1995 4.0L Cherokee)

How To Test The O2 Sensor Heater (1993-1995 4.0L Cherokee)

The oxygen sensor, on the 1993-1995 4.0L Jeep Cherokee, is a 4 wire sensor that comes equipped with an internal heater. Sooner or later the O2 sensor's internal heater will fail and the fuel injection computer will set an oxygen sensor trouble...   read more >>

How To Test For A Blown Head Gasket (1993-2001 4.0L Jeep Cherokee)

How To Test For A Blown Head Gasket (1993-2001 4.0L Jeep Cherokee)

This tutorial will explain the 4 most common ways to test for a blown head gasket on the 1993-2001 4.0L Jeep Cherokee. So, if you suspect that you've got a blown head gasket on your hands, this is the tutorial that'll help you confirm...   read more >>

Oxygen Sensor Circuit Wiring Diagram (1997-1998 4.0L Jeep Cherokee)

Oxygen Sensor Circuit Wiring Diagram (1997-1998 4.0L Jeep Cherokee)

APPLIES TO: This oxygen sensor circuit wiring diagram applies to the following vehicles: 1997, 1998 4.0L Jeep Cherokee. This oxygen sensor circuit wiring diagram includes the following circuits: Auto shutdown (ASD) relay...   read more >>

How To Test The Crankshaft Position Sensor (1993-1995 4.0L Jeep Cherokee)

How To Test The Crankshaft Position Sensor (1993-1995 4.0L Jeep Cherokee)

A bad crankshaft position (CKP) sensor will cause your 1993-1994 4.0L Jeep Cherokee to crank but not start due to a lack of spark. In this tutorial I'll explain how to test it and find out if it's bad or not in 3 tests. Contents of...   read more >>

Oxygen Sensor Circuit Wiring Diagram (1996 4.0L Jeep Cherokee)

Oxygen Sensor Circuit Wiring Diagram (1996 4.0L Jeep Cherokee)

APPLIES TO: This oxygen sensor circuit wiring diagram applies to the following vehicles: 1996 4.0L Jeep Cherokee. This oxygen sensor circuit wiring diagram includes the following circuits: Auto shutdown (ASD) relay circuit....   read more >>