Jeep Cherokee (XJ): 4.0L engine
Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Engine > 4.0L engine
- Description and operation
- Diagnosis and testing
- Service procedures
- Removal and installation
- Disassembly and assembly. Cleaning and inspection. Specifications
- Special tools
2.5L ENGINE SPECIAL TOOLS
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Engine
DESCRIPTION
The 4.0 Liter (242 CID) six-cylinder engine is an
In-line, lightweight, overhead valve engine.
This engine is designed for unleaded fuel. The
engine cylinder head has dual que ...
Other materials:
Powertrain control module (PCM)
DESCRIPTION
The Powertrain Control Module (PCM) is located
in the engine compartment (Fig. 1). The PCM is
referred to as JTEC.
OPERATION
The PCM operates the fuel system. The PCM is a
pre-programmed, triple microprocessor digital computer.
It regulates ignition timing, air-fuel ratio,
emis ...