2004 Jeep Wrangler X, AutomaticFACTORY OEM SERVICE PROCEDURE

PCV Valve: Description: 2.4L

The 2.4L 4-cylinder engine is equipped with a closed crankcase ventilation system and a Positive Crankcase Ventilation (PCV) valve.

This system consists of:

  • a PCV valve attached to the left/front side of the valve cover. It is secured with 1 bolt. An o-ring is used to seal valve to valve cover. Another type of threaded PCV valve may be used.
    Fig 1: Locating PCV Valve - 2.4L
    G01708643Courtesy of DAIMLERCHRYSLER CORP.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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