Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/87/i/heater-core Is your car or truck's windshield fogging up on the inside? In this video, Andy gives you some diagnostic tips, and an inside look at where a heater core is, and how it works. A leaky heater core can add moisture to the hot air blowing through your car or truck's vent system, and when that humid air hits the windshield, you're gonna get fog! 0:00 Windshield Fogging Up? Sweet Smell From Vents? How to Replace the Heater Core on Your Car or Truck
0:27 How a Heater Core Works!
3:15 Diagnosing a Heater Core Can Be Tricky, Because It's Behind the Dash
4:37 SUBSCRIBE! | Shop 1AAuto.com Link Below!