Question about 2002 Hyundai Accent

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Hi we have a 1.5cdi accent & when you put heater on windscreen it automatically puts air con on.Is it possible to disconnect air con all together as the car seems to go through more fuel when its on

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  • dean_myers Jan 23, 2009


    When you put heater on windscreen symbol it automatically puts air con on.You are unable to put air to screen without use of air con


  • kevin carpenter May 11, 2010

    so when you trun the system to the defrost mode the a/c comp is engauged , its not blowing cold air correct, but the comp is engauged. ?



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Have your mechanic install a bypass switch for the compressor. Then you can control if the a/c is functioning, regardless of the other climate control settings.

Posted on Jul 25, 2012

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FYI - The reason for the AC kicking in is to remove humidity from inside vehicle, which allows for faster defrost, and less build up of moisture on windows etc. This is common on all vehicles with AC. Only remedy would be to pull wire connector off compressor. Remember though, It will take longer to defrost, and try to remember to hook it back up once in a while to keep your compressor working, so it doesn't seize up from not being used.

Posted on Jan 24, 2009


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What make an model an year vehicle do you have ? The air blows out of the floor vents an center vents but not defrost ? Possible mode actuator , stuck mode door ! There is a door inside the heater / A/C assembly that directs the air to the desired position . These doors can be moved by a vacuum operated actuator or an electric motor . Sometimes thing's put on the dash end up inside the heater box , fall through defroster vent ! Pens , pencils etc.. Depends on the make vehicle an system , manual , or automatic climate control . Some of the newer vehicles the HVAC system as it is called , the control panel is a electronic control module an can store DTC'S - diagnostic trouble codes !

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the advice is correct up to a point in that the seal in the compressor needs to be working or it dries out and leaks out the gas
AS for the rest no
evaporator leaks , line leaks or condenser leaks occur from metal fatigue or corrosion
Internal corrosion is from moisture in the system from the system not being properly vacuumed to allow the moisture to boil off before the gas is added
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Possibly your problem or loose fitting nut/s
To add further , all cars running a climate control system have the ac compressor running all of the time and when it gets too cold , the module opens up the heater core to take the edge of the cold air
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If your car has an air conditioner turn it on as well as the heater . Air conditioned air is very dry and usually defrosts the windscreen quickly. The heat from the heater will overcome the cold air from the air/con. It is good for the air/con to be run during the winter months as well as summer, it stops the seals drying out and leaking refrigerent.

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I have a 1999 dodge caravan , there is a sound that seems to be comming from the glovebox i sounds like a printer running when i turn the heat on it smells like plastic burning what can this be

Hi there,

Does this noise occur at all times, or only when you operate the heater/air con?

If the latter, then as a guess, I would suspect perhaps a leaf (or other foreign particle) has entered your vehicle's air inlet (below your windscreen or front air intake) and made its way down to your heater BLOWER FAN.

Alternatively, there could be a short or burnt component, causing the smell.

Would require someone who knows how to get into the blower assembly, to check for possible culprit.


"If this has helped you in any way, please rate this solution" :-)

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