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#1
04-10-2021, 02:19 PM
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ac compressor not engaging
I never had working AC. I was told the aux fan was dead which it was. Also the 50 amp fuse behind the other fuses was blown. changed the fuse but it blew again. I have just fitted a second hand fan and it spins up fine. Now the problem is that the compressor does not engage. I was wondering if there is a fuse for the compressor. And i would like to know what voltage fires up the compressor so that i can jump power to it. Or does any body know what i could test to find out what could be wrong. Thank you in advance. Dave king 
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#2
04-10-2021, 05:20 PM
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I would bet your low on refrigerant. The low pressure switch isn’t allowing the compressor to engage. How mechanical are you? You could try jumping the trigger wire at the compressor (dunno if it’s pos or neg) and see if the compressor fires up, if it does and it doesn’t get cold, there’s your answer. If your not mechanical, take it in and have it looked at.
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#3
04-10-2021, 09:02 PM
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Have you run codes with a Foxwell or real BMW scanner? Why does it say the compressor is not engaging? I think it would be highly likely that the fan fuse was blown, preventing the compressor from running, AND you had a second problem keeping the compressor from running as well. A Foxwell would tell you exactly what the problem is.
__________________
2003 3.0 5MT Topasblau Purchased in 2016 and sold in 2024 2012 35d Platingrau
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#4
04-10-2021, 09:12 PM
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The clearest thing you have here is that 50A fuse blowing. I would focus on that. Exactly when does it blow? Can you do some experiments where you unplug certain things and see if the fuse does not blow? Yes, you will need some fuses.
And yes, once you get that figured out, you might be low on refrigerant or some other issue may exist. But maybe not. You might have a simple short somewhere.
__________________
2001 X5 3.0i, 203k miles, AT, owned since 2014
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#6
04-11-2021, 06:29 AM
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Just put power to the compressor and it started spinning.
ac did not blow cold. I pressed one of the valves on the ac line and gas came out. so could the problem be low gas even though it released from the valve. Thank you
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#7
04-11-2021, 11:10 AM
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Suggest you take it to a reputable shop to evacuate and recharge the system.
__________________
 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interiorDallas
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#8
04-11-2021, 11:14 AM
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Quote:
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#9
04-11-2021, 11:23 AM
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Quote:
 
__________________
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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#10
04-11-2021, 01:06 PM
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I agree also because you could have oil slugged your condenser too....
Don't ask how I know...  Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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