× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 97 F-800 5.9 Cummins No Heat
Posted to HD/Fleet Forum on 1/7/2006

George, try "burping" the heater core, there may be an air lock in the core. I've had some Ford F800 dumps that wouldn't heat up, and that was the culprit. Login to read more.