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The heater core is cracked. You may also be smelling a sweet sort of smell when you turn on the heat and the car is running hot. That sweet smell comes from the anitfreeze when it burns.

I have a 1998 Ford Expedition and I smell antifreeze inside the truck. also antifreeze leaking around the passenger side of motor outside..... I can see a mist coming out of the ac vents.... could it be bad heater core and is it easy to fix or do you have step by step removal/installation instructions? please help

Your heater core is probably cracked. There is alot of work to get to the core. You have to remove the front dash board.

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โˆ™ 2015-07-17 17:33:15
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Q: Why would antifreeze leak out of the heat ducts?
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