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#1
07-27-2013, 06:56 AM
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Air Cond icing up
Hi Guys I have a problem that keeps happening whenever we go on a trip. I will define this by calling a trip longer than 3 hours driving. The air works faultlessly at all other times. It seems that the system is icing up because the fan is still working but no air is coming out of any of the air vents. Are there any fix's for this problem.
Thanks
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2003 X5 4.4i 
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#2
07-27-2013, 06:59 AM
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Check the high side and low side pressure, Your low side pressure could be too low causing the evaporator to ice up.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#3
07-27-2013, 07:03 AM
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thanks I will have to google that, I dont know what you mean but thanks for the tip
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2003 X5 4.4i
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#4
07-29-2013, 03:43 PM
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Quote:
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#5
07-29-2013, 08:31 PM
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Quote:
 First step is to check the pressures. If you haven't done it before or you don't have the proper equipment it is not a good first time DIY. A good auto parts store has the equipment to rent or will check it for you, free of charge.
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 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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#6
07-29-2013, 09:26 PM
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I plan to get the pressures checked hopefully tomorrow. Does anyone know what the "best" pressures are for the X5. I know they can vary, but just wanted to get some input about that. Thanks
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X5 E53 3.0 built 6/20/04 w/ 19" Sport Pkg Wheels.
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#7
07-27-2013, 08:23 AM
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The other component is the expansion valve, but the system needs to have the refrigerant removed in order to replace it.
Are you running with the air recirculation on? It's the button on top of the ac button.
__________________
2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#8
07-28-2013, 08:34 PM
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Does anyone know how much is the low and high pressure is supposed to be?
I think I have a similar problem. On longer trips, the AC is blowing warm air at times. Also, I can feel the compressor turn on and off and I would like to check the pressures. Thanks.
__________________
X5 E53 3.0 built 6/20/04 w/ 19" Sport Pkg Wheels.
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#9
07-29-2013, 03:44 PM
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Quote:
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#10
07-29-2013, 02:41 PM
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Check for evidence of leaks (oily residue) where the system pipes connect to the condenser and compressor. It is not unusual for the O-rings in those fittings to deteriorate. An inadequate refrigerant charge will cause the evaporator to be "super-cooled", resulting in the ice up condition.
2002 X5 3.0 236,000 miles 2004 325i 105,000 miles
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