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My 2011 qx 56 ac dosent cool at idle, works find when

Customer Question
My 2011 qx 56...

My 2011 qx 56 ac dosent cool at idle , works find when running ,took it to the infinity dealer first they said it was the expansion valve and it was replace. kept doing the same. on a second visit they said it was the compressor,it was replace.last weekend it was 95 degrees outside ,turn the car on a after 2 minutes a blast of "gas" ithink Freon came fromundeneath thecar . took it again they said it was a overchargeof the Freon. pikt it up yesterday ,doing the same!! could it be related to other system on the car??,cooling system,any other relay os outside temperature?

Submitted: 2 years ago.Category: Infiniti
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Customer reply replied 2 years ago
the ac works only find when running,on idle it blows warm air. the expansion valve and the compressor were just replace by the infinity dealer.
Answered in 19 minutes by:
3/3/2016
Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago
Jay
Jay, Certified Infiniti Technician
Category: Infiniti
Satisfied Customers: 21,808
Experience: 20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer
Verified

Hello my name is ***** ***** thank you for your question.

Do you have a extended warranty? where these repairs done by that, or did you pay for them?

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Customer reply replied 2 years ago
the cabin filter is new, yes I have the extended warranty ,but I have paid for the taes etc. so far around 240.00
Customer reply replied 2 years ago
taxes...
Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago

This type of issue really requires a hands on testing to determine what is going on. This is not a common issue. I have never seen a Expansion Valve really go on these trucks. I have seen compressors. Did they replace the receiver dryer with the compressor?

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Customer reply replied 2 years ago
Not that i am aware, but the last visit the told me that they re- chek the new compressor and it was find
Customer reply replied 2 years ago
Would a faulty receiver dryer give these syptoms??
Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago

Any time the compressor is replaced the receiver dryer needs to be replaced. Failure to replace it could result in compressor damage. This is laided out in the factory service manual

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Customer reply replied 2 years ago
I just called the dealer they are going to find out if they change the dryer or not
Customer reply replied 2 years ago
can a faulty dryer will cold on and off and cool while running??
Customer reply replied 2 years ago
can you send me copy of the page in the factory service manual so I can go to them in case they did not ??
Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago

The receiver dryer is like a filter for the AC system. If the compressor fails, any metal or debris that comes apart would go into the dryer. That is why you need to replace that with the compressor.

Let me try to find it

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Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago

Still looking. But changing the receiver dryer when changing a compressor should be common knowledge. It's like when you change the oil in the car, you change the filter.

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Infiniti Mechanic: Jay, Certified Infiniti Technician replied 2 years ago

If you have any more questions on this, please feel free to ask.

If not, and you're satisfied with my help, please Rate me. That is how I get credit for my work.

I hope I have provided you with Excellent Service.

Thanks Jay!

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