Question about 1994 Lincoln Town Car

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Fishy, steam odor coming from AC vents

Odor steaming from ac vents, fogs windows, smells like fish. looked under hood for dead animal, instead odor appears to be coming from the reserve plastic tank for radiator. the tank has a brownish film inside it that also smells of fish.

Posted by theonejuice on

  • theonejuice Apr 06, 2009

    The problem is back--i am looking for the hose today.



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benny bailey

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On a1999 f 150 faint antifreeze smell in air vents with heat or defrost on also blowing mist thru vents

Posted on Dec 23, 2013



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Forget the radiator tank. Your AC 'Condensate drain' hose is plugged up. This is a common problem. If you know where the hose comes out under the car you can ( carefully ) push a wire up it. If you're lucky it's plugged near the end by a mud-dauber wasp. If not, take it to your dealer and see if you can persuade the write-up guy to show you where the drain outlet is as a gesture of good faith. If they insist on charging you money, consider that when you buy your next car...

Posted on Dec 30, 2008


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1 Answer

Steam coming through ac/heater vents and outside windshield passenger side, I also smell antifreeze

sounds like you have a coolant leak from the heater core or a hose under the hood leaking you need help from a mechanic

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Probably fog.
Either the ac is not draining onto the ground, or the system is cutting on and off too much, or its not letting in enough fresh air. The fog would be from moisture inside the hvac box.

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I have a 2000 4.3L silverado. Heater & AC works but when defrosters are turned, on my windows fog. Why???

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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I have a 2002 Ford Taurus Sedan and I notice there is steam coming out of the hood. The steam is definitely not smoke. When I open the hood the car doesn't seem hot but I notice there is a little...

I'm guessing you have a minor anti-freeze leak.The condensation on the air conditioner piping is normal,as your AC works a lot,every time you select defosteror some other positions on your heater.
Check for a teeny leak coming from a hose on top of the engine. don-ohio

Sep 03, 2011 | 2000 Ford Taurus

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My front defroster is not working at its best, however the back one is working properly. If I add any heat while trying to defrost my windows the problem get worst.

Sounds like the heater core is leaking coolant. If it is leaking it will blow steam out of defrost vents and fog the windshield. Symptoms: low coolant level in radiator, steam coming out vents when engine is warmed up, odor of anti-freeze coming out of vents, wet carpet in floorboard near heater blower motor.
If so, replace heater core.

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I have a 1998 Expedition Eddie Bauer 2wd 5.4L. I was driving down the road the other day w/o any air or heat turned on, and a foul smell started coming out of the vents where the ac and heater air come out...

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Odor / smell

If it is putrid meat

Look under your car for roadkill , or for that matter under the hood

Has an animal crawled into the muffler area for warmth and has either died there or been killed when you started up

If it is a fishy smell

I dont suppose that you have upset someone and they have tied a piece of fish to the muffler

A very old way of extracting revenge

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You possibly have a rodent somewhere in the system. Given your description I would say somewhere under the hood.

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That was probably not steam but escaping freon coming from the vents. Probably the best course of action would be to take it to an AC repair shop.

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I think it probably is the heater core leaking.As the water eats up to boiling point small cracks will allow steam to escape. Probably smells like coolant.

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