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  #1  
Old 08-01-2013, 08:58 AM
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Not to hijack this thread but, any update on your ac issue? My 2003 3.0i has the same issue blowing hot air and had high pressure.... It worked fine in the morning going to work and when starting up to go home, only hot air. I released the pressure to the green area on the gauge and nothing.
I was going to start with the least expensive trigger point and replace the high pressure switch. It's only $35 online and go from there.

Thoughts?
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Old 08-01-2013, 09:07 AM
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If you didn't add refrigerant to the system there is no reason to release refrigerant from the system because the low side reading is too high. The high side pressure switch is only there to disengage power to the compressor to stop it from building up too much pressure in the system.

Was the compressor running when you read the "Green" gauge? Compressor has to be running in order for the low side pressure to decrease because that is the "Suction" side.
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  #3  
Old 08-01-2013, 09:42 AM
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Gotcha...no, the clutch was not engaged. The auxiliary fan wouldn't come either and I physically checked the fuses but, haven't with a meter. Will confirm they're condition with a meter this weekend. I suspect it's either the fan or compressor but, wanted to get input as to what possibly is the culprit. Its too damn hot down here to go without ac.

Thanks!
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"I can’t understand it. I can’t even understand the people who can understand it"

Queen Juliana (1909-2004), of the Netherlands

"If you choose not to decide, you still have made a choice!"


2004 X5 4.8is Imola Red-228K ZF-GA6HP26Z-Sold
2006 X3 3.0i Mystic Blue-175K, ///M pkg 6-Spd Manual- Trading in 6/10/17 for a Mini too!
2003 Silver X5 3.0- sold
2000 VW Beetle 1.8 turbo-165K- Totaled 9/11/16
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  #4  
Old 08-01-2013, 09:56 AM
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So you bled down the low side so that it match the "Green" Gauge mark without the compressor engaged. Hate to tell you but you are now low on refrigerant. The system could be so low that it won't allow the compressor to turn on.

If you have some BMW scanning software such as BMW 1.4 or Carsoft 6.5 or INPA, you can check to see if you have a fan fault or other problem with the HVAC system.
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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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