My 1994 Impreza suddenly started spewing hot air...
My 1994 Impreza suddenly started spewing hot - HOT - air into the cabin. The A/C doesn't work. I've checked the fuses, they're ok. I've checked the fluid levels, they're ok too. What is the likely problem/solution? No setting on the panel will shut off the flow of air.
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Re: My 1994 Impreza suddenly started spewing hot air...
Turn off the heater tap under the bonnet by disconnecting the cable and sliding the lever ouve,if its stuck take off heater inlet and outlet water hoses and connect them,youve then bypassed your heater that will fix it
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A modern, well maintained vehicle's exhaust is virtually orderless once the catalytic converter has fired up. What you could smelling is oil leaking from the engine, for instance, from the valve cover that then drips down onto the hot exhaust where it vaporizes. That oil vapor is then ingesting into the passenger compartment through the fresh air intakes. Try airing out the cabin and then set the ventilation controls to recirculation mode to see if the problem persists. Also, the oil vapor will only happen when the exhaust is hot. So if you don't smell it when you first start the engine, that could be confirming this cause. Look at your engine and see if you see oil and dirt oozing from the valve cover gasket. You can try to tighten the oil cover fasterners to see if it stops the leak, but the best approach would be to replace the valve cover gasket.
depends how you are starting the ac .Always on starting the ac when weather is hot the first step is to start car ac fully down all the windows in order the ac blow push out the hot air in the cabin out and this will also do whilst driving either. When you notice that the air in cabin gets cooler then you wind up your windows. Depends also have the correct gas in the ac system. and the ac temperature sensor works ok.
several things can make the a/c blow hot air. if the a/c was working but barely blowing then you may want to check for a clogged cabin air filter(it is behind the glove box in the a/c box). since the a/c is blowing hot all the time now, try releasing the freon out of the system or have it recovered into a recovery machine. you may have OVERCHARGED the system and the high pressure switch is keeping the compressor from working.the best thing to do is have the system pressures checked to see if the low side is 35-45 psi and the high side is175-225 psi with the compressor working. if the pressures are not within these parameters then there is another problem.
what kind of refrigerant you put on your system? you are contaminating the system and which may compromise the efficency to take away the heat from the cabine to the atmospheric air.so make sure yoy put the right refrigerant and thereis no leak in the system.
either you have a air pocket in the cooling system or the engine got to hot and hurt the head gasket .while engine is cold check level if low fill up slowly if full start car with radiator cap off is coolant spews out of radiator then look to the head gasket remember coolant should me cold!!