https://stream.echo6.co/videos/watch/400102ac-37ad-4e1f-95d9-cc8009609383 Shop for New Auto Parts at 1AAuto.com https://1aau.to/c-52-bB No heat coming from your vents? In this video, Len tells you about common causes of cold air blowing out of vents when the fan is on high, and the temperature is set to hot! If you are having trouble with your heat, check out this video! 0:00 No Heat Coming from Your Vents? 5 Chilling Things to Inspect Under the Hood of Your Car or Truck 0:44 How the Heating System in Your Car or Truck Works 1:15 Checking Coolant Temperatures and Levels 2:27 Looking for Leaks 3:38 Checking the Water Pump and Seals 4:40 Looking for Thermostat Leaks and Malfunctions 5:51 Inspecting the Belts and Tensioner 6:21 Check Coolant Lines and Hoses for Leaks or Obstructions 7:38 Look for an External Temperature Control Valve 8:09 Leak Stopping Additives Can Cause More Problems! 9:26 SUBSCRIBE! | Shop 1AAuto.com Link Below! 🔧 List of tools used: • Flat Blade Screwdriver • Phillips Head Screwdriver • Pry Bar https://1aau.to/o6z-1AXAA00020 • Complete Metric Socket Set • Coolant Funnel Set • Coolant Pressure Tester • Ratchet • Gloves https://1aau.to/oaTK-1AXSS00048 • Safety Glasses • Drain Pan • Pick https://1aau.to/oZE-1AXAA00037 Subscribe: https://www.youtube.com/channel/UCVvE8kQTuZEykvMFZBVzftg?sub_confirmation=1 Check out our playlist: Tips & Secrets only Mechanics Know: https://www.youtube.com/playlist?list=PL37d7oWG6wDDqLG8BNFCEkbXEomZk1ITM 📱 Download the 1A Auto Repair App for more videos, torque specifications, and car repair information: https://1aau.to/appdownloadyt 🚗 For More Info visit us at https://1aau.to/h-fK9 ⚠ DISCLAIMER: While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video. Fri, 17 Apr 2026 10:17:56 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/400102ac-37ad-4e1f-95d9-cc8009609383 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.