There is a leak somewhere in the cooling system. The sound heard is "air" moving through the heater core.
Fix it before the engine is damaged. A decent shop with a cooling system pressure tester will find either externally or hopefully not internally.
Right on the money my man, top radiator hose had a small leak… $150.00 repair and she’s back on the road… Gonna get a real damn temperature gauge installed it. If you have a recommendation for one..
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.