Question about 1992 Honda Accord

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1992 honda accord wagon. Windows fog up when running heater. coolant stays full with no loss, so im not sure heater core is to blame. any ideas?

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  • David Melrose May 11, 2010

    Do you have A/C? It's possible that your A/C condensate drain is plugged up and water from condensation is pooling in the bottom of your evap/heater core case. The warm air from the heater is making the water evaporate and then it condenses on your windows. The simple fix is to clean out the drain. A leaky heater core will also usually give off a syrupy sweet smell of warm coolant. Do you smell this when you run the heater?

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Try running the defroster/defogger as a subsitute for the heat.

Posted on May 09, 2009

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1 Answer

Windows fog up


simple answer, turn on the fan to the fresh air setting and get some air in there. since that is so obvious, you might already be doing that. another possibility is if your heater core has a small leak then as you are drawing air through it the leaked coolant/water is evaporating into the incoming air and is helping your windows fog up.

Jan 18, 2014 | 1990 Honda Accord

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Driving on interstate and car started running hot. Heater was working and blowing hot air. Had steam coming from under hood. Top Radiator hose was hot but bottom hose was cool. Could it be a blown heater...


it seems as if there is a clog in the radiator, flush out coolant system and see if this helps.usually when top hose is hot and bottom hose is cold there is a clog somewhere in system. check radiator and make sure coolant is circulating. hope this helps carl,

Dec 12, 2009 | 1992 Honda Accord

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My 1997 Honda Accord has a problem with the windows fogging up all the time. I have to turn the AC on to get them to clear. Any suggestions?


make sure that you dont have coolant leak, and if it does check if the heater core is leaking and repair as needed.

the other problem will be place the control on fresh air rather that on recicculate

Nov 16, 2009 | 2001 Honda CR-V

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Cannot get heat even after changing thermostat in 1992 honda accord what do i check next


Check the heater control valve. It is usually behind the engine up next to the firewall. Have someone inside the car move the heater control to heat. A lever on the heater control valve should move when this is done.

This valve allows hot coolant to enter the heater core inside the car. If this hot coolant doesn't arrive, you have no heat.

Oct 14, 2009 | 1992 Honda Accord

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the heater core could be leaking that explains the fog but i would have the water pump checked

Aug 24, 2009 | Volkswagen New Beetle Cars & Trucks

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All my windows get foggy


If Your Fan is operating properly, along with Your defroster Meaning Your A.C. Pump is charged and engaging, I would have to take a look at Your heater-core to see if it may be leaking on to Your floor on the passenger side. Therefore causing more moisture in the car than can be evaperated under normal conditions... Hope this may Help!

Feb 17, 2009 | 1998 Honda Accord

1 Answer

The inside of the car fogs up and on very cold mornings ice forms


This can be caused by a heater core that is leaking inside the car, one way to determine if that's the problem, is if you can smell antifreeze. It is a 'sweet' smell, and is quite noticeable. If u don't notice this, I have to say this is a common problem w/ Hondas. I've had a civic, 2 accords (currently have a 92), and 2 Preludes, they are great cars, but they all suffer from fogged up windows in cold weather. One reason is that they are quite air tight, and the older models don't have the greatest defroster system (weak). Try and keep a window cracked open slightly, see if that helps.

Jan 04, 2009 | 1992 Honda Accord

1 Answer

97 Ford Taurus


Replace the engine thermostat, it is probably stuck open.

It is located where the top radiator hose enters the engine block and is supposed to close when the engine is cold, thus prevent coolant from going to the radiator while the engine is heating up.

At engine operating temperature, it opens up, sends the coolant to the rad, and keeps the engine coolant at that constant temperature.

99% of the time, this is the culprit.

The other 1% could be a clogged/partially clogged heater core, or a busted heater core (accompanied by a coolant leak/loss over time) which fogs up the windows even more when the heater is on defrost.

Thermostat replacement is an easy, quick job and cheap.

Heater core replacement is a little bit more time/money consuming

Aug 27, 2008 | 2006 Ford Taurus

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