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:
Modes of operation
OPERATION
As input signals to the Powertrain Control Module
(PCM) change, the PCM adjusts its response to the
output devices. For example, the PCM must calculate
different injector pulse width and ignition timing for
idle than it does for wide open throttle (WOT).
The PCM will operate in two ...