Jeep Grand Cherokee (WJ/WG) ENR Injectors

Jeep Grand Cherokee (WJ/WG) ENR Overview

The Jeep Grand Cherokee (WJ/WG) with the ENR 2.5L/2.7L/2.8L CRD engine was produced between 2001 and 2004. This vehicle uses Bosch common rail diesel injectors (primary part number 0445110059) operating at fuel pressures up to 2000 bar. The ENR engine in the Jeep Grand Cherokee (WJ/WG) produces and of torque. When replacing injectors on the Jeep Grand Cherokee (WJ/WG) ENR, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

Common Injector Problems in Jeep Grand Cherokee (WJ/WG)

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  Rough idle and engine vibration — Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
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  Excessive exhaust smoke — Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
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  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
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  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
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  Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.

Other Engine Codes for Jeep Grand Cherokee (WJ/WG)

Other ENR Vehicles

Related Pages

Bosch 2.5L/2.7L/2.8L CRD — browse compatible engines, vehicles, and injectors