1996 Audi A4 Quattro 2.8, die when the A/C is turned on - Audi Forums
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post #1 of 6 (permalink) Old 12-28-2011, 12:56 AM Thread Starter
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1996 Audi A4 Quattro 2.8, die when the A/C is turned on

So this is my first topic and I'm not super familiar with A/C but when I go to turn the A/C on the car runs rough then dies, no matter what the rpm's are. Any idea's ?


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post #2 of 6 (permalink) Old 12-29-2011, 03:10 AM Thread Starter
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Also a update, I had my dad listen to the sound the cars make and look under the hood when I turn the A/C on and he said he saw sparks shoot from right below the main fan on the driver side where the compressor is. Do you think the compressor is done for ???


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post #3 of 6 (permalink) Old 12-30-2011, 07:58 PM
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Hey! The single belt runs alternator, power steering belt and ... the compressor. With A/C off it runs compressor on idle, when you switch A/C on, the magnetic clutch engages and the compressor starts running. If there is the problem with the compressor it generates tension and engine runs rough and low rpm. Alternator would output low as well. You could solve the compressor issue (may be clutch replacement). Or theoretically you could get 2.8 short belt and bypass the A/C.
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post #4 of 6 (permalink) Old 12-30-2011, 10:32 PM Thread Starter
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Can you buy a rebuild kit for the clutch system on the compressor ?


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post #5 of 6 (permalink) Old 12-31-2011, 09:01 AM
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Yes, there are multiple DIYs on replacing the clutch (e.g. http://www.cpsproducts.com/site/elem...20AC10868A.pdf and VWVortex.com - #@$%! AC Compressor clutch bearing dead). Could be done without opening the system. You would need to find the p/n (like 034260811 for Audi 100). I replaced just the bearing by looking it up on internet by dimensions. It is not a 30 minutes job!
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post #6 of 6 (permalink) Old 12-31-2011, 02:04 PM Thread Starter
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Awesome ! I'll have to do some research cause to me it seems like the clutch isn't working properly


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