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Why will 05 sentra A/C only blow cold while driving

My A/C is cold while driving but if I stop it's warm compressor kiks on for a sec then off while idling

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The air conditioning system may need a charge of refridgerant.

Posted on May 13, 2014

  • randy21686 May 13, 2014

    I tried that but it's good on that do you know what else I could check?

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4 Answers

2004 sebring air conditioner stops and starts


Low freon will cause the compressor to short cycle, when the compressor runs the pressure in the low line is pulled down and the low pressure switch turns it off. Not running the pressure builds up and turns it back on. In the old days there was no low pressure switch, with no freon to carry the oil the compressor was destroyed.

Jun 28, 2014 | 2004 Chrysler Sebring

1 Answer

Blows cold when first started and then blowes warm


I would replace the AC compressor cycling switch it may be sticking have seen it a number of times. The switch is located in the receiver dryer on the passenger side of the engine compartment. See picture below.


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If this isn't the problem the AC compressor relay may also cause this, flip a coin.

Sep 13, 2012 | 1999 Ford Taurus

1 Answer

Nissan sentra ac blows warm and cold air


Usually low on freon or a faulty pressure switch.
Could also be a problem with the ac clutch on the compressor.

Jul 10, 2012 | 2007 Nissan Sentra 2.0 SL Sedan

1 Answer

05 tc. A/C blows hot then cold. Didn't blow cold


The A/C pump ismade of three seperate components. You are correct in it being electrical, to some degree. The compressor is self turnes, & in turning moves the freon thru the condensor,dryer, evaporator, & condensor. With the engine off, you can grab the clutch on the compressor, & turn it manually. Now, to your question. When you turn on your A/C, it sends a signal to one of 3 parts on your A/C compressor. The 1st signal, is a charge to the magnet (not its nomenclature name) that pulls the clutch, quickly, into the compressor shaft, so it can start turning. Now as this signal, is working,on an intermittant basis, 1 your clutch has been damaged, not always engaging fully,causing disc wear. The activating magnet, works intermittantly, this too, strains the electrical wiring, going thru the compressor to the magnet. Now the compressor works, but, 2 components, have gotten very hot, by intermittant action. To remove them, if "fused", will be labor intensive. Thanhaving a "sealed" system, dis-assembled, then re-assembled on a mechanics work table. No matter how hard I try its never completely clean......the repaired compressor can allow harmful contaminates into a system that works, with one part not working. Once contaminates are in the system......all the components can be damaged. The mechanic, is giving you the most cost efficieant repair, that will last longest, with least possiblility of failure.

Aug 31, 2011 | 2005 Scion tC

1 Answer

Both boxes are warm. the fan runs, and the compressor kiks on for 10 sec. then kiks off i have checked the thermostat and the door seals, both r good. what else could it b?


Im sorry but it sounds like your compressor is bad. You can try replacing the start relay it is located on the top of the compressor under a plastic cap. The cap is held on by a metal clip. The start relay is about the size of a nickel and is under this cap and attached to one of the three prongs coming out of the compressor. The compressor is located in the back under the bottom of the refrigerator and is about the size of a soccer ball and is black. Make sure you unplug the refrigerator first. I hope I'm wrong and the start relay is bad but most of the time if it kicks in for more than five seconds its the compressor. good luck

Aug 31, 2010 | Kenmore 57029 Side by Side Refrigerator

2 Answers

I have a 2002 Acura RSX that has AC Problem. Blows very cold air, but not all the time. As long as RPM is running at drive speeds, I have cold air. However, at stop lights the air temp goes warm. If I...


your ac compressor is freezing up try not putting it on cold all the way. put thermostat towards the red jus a lil but still on the cold side to see if that helps

Apr 03, 2010 | 2002 Acura RSX

1 Answer

My 2002 Sentra's AC just blows warm air. The


You most likely just to to have the freon recharged.

Jul 08, 2009 | 2002 Nissan Sentra

3 Answers

Heater blowing cold air


My 05 sentra with 79k miles heat will warm up and then get cold after a mile of driving, we have tried to get the air pocket out, the mechanic stated he thought it could be a blown head gasket, another mechanic said it was a bad heater core. Any advice would be appreciated.

Nov 24, 2008 | 2005 Nissan Sentra

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