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  #1  
Old 08-17-2012, 09:46 AM
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Requesting advice from the A\C guru's on here

My passenger side a\c is not blowing nearly as cold as the driver side... dealer telling me I have a bad evaporator and wants $2,100 to replace the evaporator unit. Sounds like BS to as from what little I know about the a/c how would the driver side be blowing cold if the evaporator needed replacing?

I'm thinking it might just need an a/c recharge and am researching if that is something I can do myself... What say Outpost guru's??

Thanks a bunch... btw I have a 2005 4.4 with 85k miles...
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  #2  
Old 08-17-2012, 10:15 AM
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might be one for each but i really dont know

hands down you can bet with closed eyes that the part is probably 1/3 to 1/4 the cost of the quote from the Stealership

if you're handy and can locate the part it's probably a DIY but again i dont know

I'm sure the DIY guys on here will chime in on this

God Luck
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Old 08-17-2012, 10:30 AM
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Take it to an AC shop to diagnose, evacuate the freon, and fill to spec with new oil. Sounds like you are low. Very common on dual climate control cars to have one side blow colder than the other when freon is low.
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Old 08-17-2012, 11:42 AM
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Did they say why? Is it leaking?

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Old 08-17-2012, 12:25 PM
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yes. they stated it was leaking... since its under pressure I don't understand how enough refrigerant could remain to get and keep the driverside cold...
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Old 08-17-2012, 12:35 PM
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could be the valve that opens for the other zone... there was a thread on here before i seen that...


i have that problem myself... i have the driver vent and left side center vent blowing cold while the right one blows hot and the other zones (passenger and rear) are very very weak.....

and at the lowest possible setting when its on....sometimes it will make a hissing noise... weird

what i tried to do is recharge the system.... i got it done the right way with the gauges and the scale...etccc..... and it has been tested for leaks.... no leaks....


This could possibly be the final resistor? common thing i heard...
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Old 08-17-2012, 11:39 PM
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AC leaks can be very small and could take an extended period to leak out all the refrigerant. If the evaporator is leaking, you likely have lost enough refrigerant in the entire system that, for what ever reason, you don't have enough to cool both sides.

Alex you need someone better with AC...
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Old 08-17-2012, 11:42 PM
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You are low on freon, the question is why, only two reasons to be low, a leak or someone let out some freon. I bet you have a leak. I had the same problem. I recharged it a few times but the problem returned. I finally replaced the evaporator and no mare leaks. Did it myself, it not easy, the dash has to be removed. $2100 sounds about right for someone to do it. Here is a link to my DIY http://www.xoutpost.com/bmw-sav-foru...ement-diy.html

Last edited by tacairlift; 08-17-2012 at 11:47 PM.
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Old 08-17-2012, 11:47 PM
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My Ac stopped working today. It's just hot air. Does anyone have a diagram on how
The Ac system runs?
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Old 08-18-2012, 08:21 PM
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Its not complex. Just follow the lines.
Remember they make a loop.

Last edited by bastereo; 08-18-2012 at 08:36 PM.
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