Question about 2003 Toyota 4Runner

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Air Conditioning My front vents blow warm air while rear vents blow cold. Dealership says system needs to be drained and recharged. But I just had it checked not long ago and they said freon was fine. Any other possible explanations?

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Find out if ur a/c system has an expansion valve if so then one of them is clogged

Posted on Jun 26, 2008

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Air conditioning blowing warm air.


first of all why did you charge the system it never needs to be recharged unless you have a leak in it that being said when you turn on the ac do you hear the compressor clutch kick in and if so do you see condensation on the accumulator and does it feel cold? yes/no if yes then the vacuum door inside the car is not opening thus giving you warm air========if no the refrigerant leaked out again because of a leak ///// or the cycling switch is bad///// or there is still not enough refrigerant in the system to get the switch to turn on the compressor//// or your compressor is n/g

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It blows out hot air even when the air in the front is cold


Hard to read your question, do you mean it blows cold air out of the front vents and hot air out of the rear passenger vents?

If the air coming out of the front is just cool and not cold, and the rear vents are warm, you have low freon and need to have it serviced.

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Where is the front air conditioning drain line located on a 2002 Tahoe? It's not dripping anymore and the air is blowing warm even after recharging with coolant. The rear drain gets clogged or stuck and I...


The drain line should be under the floor pan just about below where the passengers feet would be. You should see a short piece of hose hanging down near the frame rail by the firewall.
However, if your air is blowing warm air, there will be no condensation dripping anyway, because your evaporator is not cold. Unless of course the problem is in your plenum mixing door.
It sounds like you have a a/c issue, i.e : servicing, compressor clutch, etc. rather than a condensation drain issue.

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Low refrigerant charge or a sticking blender door. Check the suction line for temperature. A cold tube means that the charge is fine.

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