LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2004 >> Wrangler SE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Emissions Control System >> CCV System >> Description - CCV System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Description - CCV System

The 4.0L 6-cylinder engine is equipped with a Closed Crankcase Ventilation (CCV) system and a fixed orifice valve. The 2.4L 4-cylinder uses a PCV valve. See PCV VALVE  for 2.4L information.

Fig 1: Locating Crankcase Ventilation (CCV) Fitting - 4.0L
G01708642Courtesy of DAIMLERCHRYSLER CORP.