Question about 1999 Jeep Grand Cherokee

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Whenever I turn on the heater, defroster or AC the smell of antifreeze is very strong. The heater still works, but the smell is too much. What is a reasonable price (labor&parts) too repair.

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The heater core or it's connections to it's supply and return hoses which are located under the dash are leaking. This represents about $50 in parts and about $100-120 labor at most shops.
Or you can repair the issue yourself with $3 worth of epoxy and simple tools.

Posted on Jan 02, 2011

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Posted on Jan 02, 2017

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Check coolant level, if it's losing coolant, you may have a heater core leak. Does it smell like antifreeze in vehicle when defroster on? If by chance your ducting drain is plugged, it may just be water or condensation build up inside where core is. Antifreeze leak will also put a sticky film on inside of windshield, so if you wipe it with finger and it feels sticky, it may be a core leak. Be sure to double check heater hose connections in to firewall/heater core, just to be sure your leak isn't a bad hose connection before going to far if core appears to be leaking. A pressure test on system may give you a better idea what's going on. If all checks out and no leak apparent, be sure your AC compressor is engaging when in defrost mode, as that is what helps remove the moisture in the air during defrost. If compressor is not engaging, it will take much longer to remove moisture in the cabin.

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Have an '86 F250 v8 460 engine. Defrost problem, when it is cold and I run the defroster it produces a haze on the glass and the smell of antifreeze fills the cab. I can see at the bottom of the w


You will need to replace the heater core. It obviously has a small crack or hole in it and that is where the steam on your windsheild and the smell of antifreeze is coming from.

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I have steam coming out of my defroster & it smells like antifreeze without the defroster or heater even being on. What could this be? I am unable to see to drive because of a film that covers the...


yOUR HEATER CORE NEEDS TO BE REPLACED. ANTIFREEZE CONTINUALLY RUNS THROUGH YOUR HEATER CORE WITH OR WITHOUT THE HEAT OR AC BEING ON. THIS ALLOWS YOUR ANTI-FREEZE TO COOL ABIT WHEN IT RETURNS TO THE BLOCK.

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Hello dedunwoodie.
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(1) SMELLS LIKE: MAPLE SYRUP
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