Jeep Wrangler-YJ 1987-1995 Crankcase Ventilation (CCV) System Repair Guide
Access our free Crankcase Ventilation (CCV) System Repair Guide for Jeep Wrangler-YJ 1987-1995 through AutoZone Rewards. These diagrams include:
- Fig. 1: 2.5L engine CCV system
- Fig. 2: CCV system used on 4.0L engines

Access our Jeep Wrangler-YJ 1987-1995 Crankcase Ventilation (CCV) System Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides.
- Add your vehicle in Manage My Vehicles.
- Enter your vehicle details.
- Click the “View More” button, and then click “Vehicle Repair Guides.”
- Select the chapter “Crankcase Ventilation (CCV) System Repair Guide”.