Review on Dorman 46014 PCV Hose - Assisting You! by Tim Larsen

Saved me a lot of time and money. The vacuum leaking into the PCV system caused the car to rough idle or flatten out as it dropped into idle. It sounded terrible and could stall if you let off the gas on any corner. Now it works great, no leaks. The stiff part of the hose wasn't perfect for a 1999 Chevy Malibu, but it came close. I've used a heat gun to expand and reshape a few corners so it fits snugly with great success.