Excessive condensation on all windows, have to use defrost on high at all times
Whenever it is cold outside my car has excessive condensation on all windows. I have checked to make sure it is not recirculating air. The only way to clear even the windshield is to run the defrost at high heat. I believe there is a clogged drain tube because in the summer there is no water draining when the air conditioner is on, but no one seems to know the location of the drain.
Re: Excessive condensation on all windows, have to use...
I have the same problem and this was due to the air supply under the bonnet of the car. You have to release the plasticcover just below the screenwipers pull out the airfilter (it is a bit narrow so be carefull with your hand). Behind the airfilter there is a flap. In my case this flap is down, which cloes the airstream. OPen this flap by moving it upwards and lock it there with tape or something and the problem is solved. The only thing is that you can not close the air inlet with the button on your dashboard, but at least the major problem is solved.
Re: Excessive condensation on all windows, have to use...
I have the same fogging problem and after 3 attempts by our local dealer I took it to my local mechanic. He found somewhere on the internet that there is a "mixing box" under the dash that has small air vent motors that were said to be the issue. Has anyone repaired this item and did it fix the fogging?
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close off the cab circulation to the outside air
make sure that the condenser fan is fully operational
fan in front of the radiator
have an accredited ac specialist check the gas pressures are correct --if there is excessive gas the high pressure switch will shut the ac compressor down
shut off the heater system as it it is a climate control system , there may be still hot air mixing with the ac air
If this only happens once from a moderate temperature day to a dramatic cool down overnight it could make sense.
When fuel cools the vapor condenses creating a vacuum in the tank. A working evap system should restore pressure eliminating excessive vacuum.
this will be from the head pressure being excessive as the gas is not being converted to liquid in the condenser. The main reason being that there is insufficient air passing through the condenser from the ac fan not working. There has to be an extra fan in front of the condenser to maintain air flow at all times the ac is operating. The second reason is excessive amount of gas in the system. Have the pressures checked by an accredited ac shop.
If it were a leaking heater core, the inside glass surface would have an oily film along with the fog.
It sounds like your fresh air intake is not working. You have to get fresh air from the outside to be able to get rid of the excess moisture inside the cabin. Or you have excessive moisture inside from a water leak that the system can't overcome.
Do your windows fog up when you use defroster? Any residue on the inside of winshield? Is the carpet damp under either floor mat? These are signs of a leaking heater core. If no to all of these check at tail pipe when running for excessive water (depending on the climate if it's cold out of coarse there will be some condensation) if so does is leave a residue on your hand? This could be the sign of a blown head gasket, blown intake gasket or cracked head. I don't know what engine you have but, Chevy 3.4 engines are known to blow intake gaskets.
Its cold! is it like polluting excessive? If the exhaust smoke is white its normal especially on a older car. Have you ever gone outside in real cold weather and when you breathe you can see the steam pretty much same thing. As long as the car is running the same then its more likely to be from the cold. Good idea may be to let your car thoroughly warm up before you drive off in cold weather.
If you mean everything goes out when you turn the key to the START position, understand this:
* Accessories will turn off during START to remove excess load on battery
* A weak battery will draw down and cause this symptom - the two most likely times of year are when it first gets really warn outside (batteries hate heat) and when it gets really cold outside (Natteries hate cold).
* A defective starter can draw excessive current and cause this symptom.
If your battery is more than three years old, I would suspect it first..
1Transmission spark control poor 2 Dirty or wrong spark plugs gap Incorrect faulty condenser,or coil ignition timing off,High or low fuel pump Pressure ,Leaking injectors or carburettor ,clogged air cleaner ,Faulty automatic choke, exhaustbloc or leak ,valves to tight need Adjustment,Excessive carbon in the cylinders ,can be clean with out open the engine low tyre pressure,Excessive Weight on the car. change oil filter and oil.
The most likely cause would be that you have the a/c set to let in outside air as opposed to recycling inside air. If the system is set to recycle, the moisture in the cabin air would quickly be removed, but set to outside air (or if the windows are open) the humidity would stay at a high level, causing excessive moisture to be collected on the evap coil. Are you confident that you located the a/c drain line and not the drain from the cowling? Hope this helps! Dano