The vacuum hose on a 1999 Chevy Malibu that comes from the PCV valve is not connected to anything where does it go?

On a 1999 Chevy Malibu, the PCV valve hose usually connects to the intake manifold. However, the *exact* location can vary slightly depending on the engine (3.1L, 3.4L, etc.).

To find where it should connect:

1. Identify the PCV valve: It's a small valve usually located on the valve cover. The hose in question should be attached to it.

2. Trace the hose: Follow the hose's path. It should lead towards the intake manifold. Look for a vacuum port or fitting on the intake manifold that's the same size as the hose. This port is often a small nipple or a short stub. Sometimes there's a rubber grommet or connector involved.

3. Consult a repair manual: A repair manual specific to your 1999 Chevy Malibu's engine will show a diagram of the PCV system and exactly where the hose should connect. This is the most reliable method. You can find these online (often as PDFs) or at auto parts stores.

4. Check online forums: Search online forums dedicated to Chevy Malibus, mentioning your engine size (e.g., "1999 Chevy Malibu 3.1L PCV hose location"). Someone might have pictures or a more detailed description of the connection point.

Important Note: Driving with a disconnected PCV hose can lead to increased engine wear, poor fuel economy, and even damage to the catalytic converter. Reconnect it as soon as possible.