I have a 1995 toyota pickup and when i start driving around town in the cold weather, the windshield frosts up so bad i have to use an ice scraper on the inside! My heater works great (I have no a/c) so why does the inside fog up so bad? I can wipe it off with my hand at times, but then it all comes right back. Its a very small cab, and has only recently started doing this. any help would be greatly appreciated!
2007-01-17 11:03:23 · 10 answers · asked by whitterbug469 1 in Cars & Transportation ➔ Maintenance & Repairs
Ok, for all you really smart guys out here who are throwing all kinds of guesses without knowing what you are talking about. In order for the defrost to work on ANY car, the a/c compressor has to be ON or your front windshield will fog up like a smoke stack. Well, here is the deal......you don't have a/c.......there is NOTHING you can do to the truck short of putting a/c in that you can do. .......(If you don't believe me, get in a car that has a manual a/c switch. When you turn the defrost on, the compressor automatically turns on.......in some cars you can push the a/c button off with the defrost still on and guess what happens. YOUR WINDOWS FOG UP) HERE IS WHAT YOU DO IN A TRUCK WITH NO A/C..... to keep moisture from building up on the inside window you have to crack your windows down an inch. This helps more than anything. Anyone who tells you to replace anything is going to waste your money. GOOD LUCK!
2007-01-17 11:29:16 · answer #1 · answered by gin and juice 3 · 1⤊ 0⤋
The humidity is high inside your truck. Crack a window, or both, to let some fresh air in, as this will help clear the windows. Run your heater on defrost, even without the a/c compressor, as the air running across the windshield should help clear the windows. If running the defroster actually makes it worse, you may have a small leak in your heater core that is pumping moisture into the air.
2007-01-17 19:19:46 · answer #2 · answered by J.R. 6 · 0⤊ 1⤋
Vacuum leak. The controls that open and close the doors in the heater to put air on the floor or on the windshield are operated using engine vacuum through very small vacuum hoses. These deteriorate over time, but are not very expensive to replace. Less than $10 for the tubing.
2007-01-17 19:10:13 · answer #3 · answered by Thomas K 6 · 0⤊ 1⤋
I have the same problem and it only happens in the real cold weather. My AC compressor has been going so and i have no Ac either.I get frost on the inside to. I think it freezes up some. It will work then go off then go on again. I spray my AC belt with belt spray and it really helps. I hope this works for you to.
2007-01-17 19:24:59 · answer #4 · answered by Sandy 3 · 1⤊ 0⤋
i own a repair shop,and usually if you have any heat,,it will keep it clear,,the control that sends the heated air to the windshield has gone bad on it,,and as for the moisture it will do this until you can get it fixed,,make sure it has enough anti freeze in it also,,but id say your main control unit is out on it causing you not to be able to get the defroster to work ,,good luck ,i hope this help,s
2007-01-17 19:10:46 · answer #5 · answered by dodge man 7 · 0⤊ 1⤋
Vacuum leak, or possibly a bad a/c compressor comes to mind as a couple possibilities. The compressor is used with the defroster.
2007-01-17 19:06:52 · answer #6 · answered by Anonymous · 0⤊ 2⤋
Because you have no a/c.The compressor usually runs when the defrost is on to dry the air.
2007-01-17 19:26:33 · answer #7 · answered by gdwrnch40 6 · 2⤊ 0⤋
sounds like the heater core has a hole in it and when you use your defroster it's blowing the coolant up onto the windshield causing it to steam up and you'll have an odor to it
2007-01-17 19:24:20 · answer #8 · answered by stev12007 2 · 0⤊ 1⤋
the flap that directs it to the windshield must be stuck
2007-01-17 19:12:42 · answer #9 · answered by Elvis 7 · 0⤊ 1⤋
I had a car that did that a short period of time right before the head gasket let go..........however you could smell the anti-freeze
2007-01-17 19:09:21 · answer #10 · answered by irish eyes 5 · 0⤊ 2⤋