To find the exact location, you need to:
1. Determine your Venture's year and engine size. This information is usually found on the driver's side dashboard or in your vehicle's registration.
2. Consult a repair manual specific to your vehicle's year and engine. A Haynes or Chilton manual will show you diagrams and pinpoint the sensor locations. You can usually find these at auto parts stores or online.
3. Use an online parts catalog. Websites like AutoZone, Advance Auto Parts, or Napa Auto Parts allow you to enter your vehicle's information and see diagrams showing where the O2 sensors are located.
Generally speaking, you'll find them in the exhaust system piping, near the exhaust manifold (pre-cat) and further downstream after the catalytic converter (post-cat). They are usually threaded into the exhaust system and have a wiring harness connected to them. Be careful when handling them, as they are fragile.
