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When you turn on the AC the cooling fans don't turn on and it throws hot air but when you drive down the road it blows cold air I replaced the thermostat,cooling temperature sensor,and fans relays

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WHAT SORT OF VEHICLE IS IT ?

Posted on Oct 16, 2010

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Posted on Jan 02, 2017

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The compressor in my 2006 Chevrolet Silverado 2500 4x4 turns on and off while parked. It blows very cold air while driving, but blows hot and cold air while parked. To hot to sit in the truck while...


the ac system needs air through the condenser ( radiator bit in front of the radiator) to operate correctly. IT it has no air then the compressed gas is to hot and will not turn to liquid and so the high pressure switch turns of the ac compressor. No problem when you are moving as road speed provides the air flow. Get an electric fan and have it installed before the condenser and connect it to the ac compressor circuit so that it is running all the time you have the ac compressor running. not the local mechanic.When dealing with ac systems the best people to take it to is an accredited ac specialist shop

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Car gets hot when Idle


You might check your cooling fan at the radiator; it may not be running. If it's not, track it down (fuse or thermal switch) and fix it!

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2004 camry ac light blinking and throws hot air. Suggestions?


My 2003 Toyota Camry AC often starts blowing hot air and the AC light starts blinking. I don't know why the following process works, but it does. Using the temp selector (left) reduce the temperature all the way down to Max Cold and then push the Auto button. It will start blowing out very cold air. After a little while push the temp selector to the desired temperature.

Apr 03, 2012 | Cars & Trucks

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I have a 2004 Nissan Xterra. It is not cooling like it should. I changed the two filters behing the glove box. I checked the pressure and it is good. The compressor is coming on and sounds like the clutch...


When you say you checked the pressure did you connect gauges to the high and low sides to get both pressures, this sounds like it may be low. also what is the temp coming out of the vents. note on really hot days and humid the ac system doesnt cool as good unless the truck is moving down the road or highway and does take a while to cool down. at a stop or sitting or in traffic the ac temp will rise as the condensor needs to be cooled like the engine does, if its not cooling then the temp will not be cold, check the front of condensor for blockage, also make sure the fan is running with ac on. this fan should run when ac compressor is on,maybe clean condensor with water hose blowing from radiator outwardto front bumper, then make sure the hot/cold blend door is closing all the way,a quick test is to turn a/c on, turn temp control to hot and see if it gets hotter then back to cold and it should get colder. this sounds like the system may just be a little low. have an a/c tech check it, you may find its low or nothing is wrong. good day.

Aug 08, 2011 | 2004 Nissan XTerra

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I have a 2006 elantra and whenever i slow down or stop the needle goes into the red zone and the a/c blows hot air. when i drive faster again the needle goes back to normal and the a/c blows cold air...


your electric fan for the AC is not working for whatever reason so when idles its all getting hot the engine and the AC system .This sort of work can be difficult to diagnose correctly and a code reader is about as good as a bible at mosque so seek the advice of a skilled mechanic who should be able to pin point the fault in seconds

May 30, 2011 | Hyundai Elantra Cars & Trucks

1 Answer

Ac not blowing cool air. How many fan are there in the engine department? how does the fan system work to cool the condenser?


The fans are inportant but the regular raditior fan will do it and the road speed of the car will blow enough air though the codenser to make it cool if it's going to. Does the compressor turn on? if it does do the lines hooked to it get hot?( the small one) and the big one get cold? The condenser should get hot, Hot enough to burn you and the freon level may be wrong and or the compressor isn't pumping. ( brocken inside)

Jul 02, 2010 | 2000 Jaguar S-Type

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1999 odyssey blows some cold air when moving


It could be a number of things. Check to see if the clutch is turning on the compressor. If it keeps turning on and off (cycling) it is low on freon. Is the condenser clean and free of bugs and road debris? Is the radiator fan coming on? If not that could explain why it is cold while driving, but hot while idling. Most all vehicles will blow colder on the AC when driving down the road because you are getting cooler air through the condenser. Hooking up a set of gauges to the vehicle will tell you best what is going on. Basic rule of thumb is: low side should be in the 30-40 lb range while running and the high side should be around 100 lbs higher than the ambient air temperature. Anything drastically different means you have a problem.

Jun 30, 2009 | 1999 Honda Odyssey

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