The heater core is a small radiator that warms the car’s cabin using hot coolant from the engine. The cooling system’s hoses circulate liquid coolant through the heater core as they do through the ...

If you haven’t figured it out yet, we’re about to cover the replacement of a heater core. Our subject is a ’89 Jeep MJ Comanche, but the steps are basically the same for an XJ Cherokee of similar ...

We've all been there—you're just cruising along in your vintage Vette and you get a whiff of coolant. Then, you notice a drip in the passenger-side floorboard. The dreaded heater core leak is ...

My 2008 Jeep JK Wrangler has always had good heat and A/C and is, in my opinion, such an improvement over the older Jeeps. But I am having a problem with the heat this year. My A/C was ice-cold this ...

Restoring your heater box with A/C may not be the last thing someone will check out on your car, but it certainly won't be the first. Paint, engine, interior, dash, and then maybe the undercarriage is ...

Heater hoses are rubber hoses that circulate engine coolant to and from the heater core, which is the small radiator that provides heat for the cabin. They typically extend from the engine to the ...

Seeing a puddle of coolant under your car is never a good thing. Whether it’s coming from your radiator, water pump, heater core, freeze plugs, or other portion of your cooling system, it can mean big ...