A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

2004 audi a6 quattro wont start

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Old Jun 5, 2018 | 06:48 PM
  #1  
colton Dunham's Avatar
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Default 2004 audi a6 quattro wont start

I have replaced the fuel pump, fuel pump relay, fuel filter, battery, and crank
shaft positioning sensor. its getting spark and will run fire with starting spray but
its not sending fuel. i used the spray to see if everything else is working. turns
out it is but the fuel pump wont turn on and send fuel.. just looking for
suggestions or answers before i go wasting more time and money. thanks.
also i checked for ground issues and havent found one.
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Old Jun 6, 2018 | 06:41 AM
  #2  
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There are a multitude of reasons it might not start. I suggest you get it towed to a shop with Audi repair experience. Based on your post you have already spent enough to have gotten it fixed by a professional.
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Old Jun 7, 2018 | 06:31 AM
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Are you getting voltage to the fuel pump?
My pump went out and I replaced it.. No problems since.

Put a voltmeter on the pump leads and turn the key on.
It will show voltage for a couple seconds if the electrical works.
If you have voltage, then the pump is bad.

Cheers.
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Old Jun 7, 2018 | 06:33 AM
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Sorry, I overlooked the part where you replaced the pump..

Never mind me...
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Old Jun 7, 2018 | 06:36 AM
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Could the fuel filter be clogged?
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Old Jun 7, 2018 | 06:43 AM
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Originally Posted by soundguyal
Could the fuel filter be clogged?
Go back and read the original post. He says he checked that.
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Old Jun 7, 2018 | 06:46 AM
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Jeez, I can't read today.
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Old Jun 7, 2018 | 02:36 PM
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Originally Posted by soundguyal
Jeez, I can't read today.
Some days are like that. Just wait till you get old!
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Old Jun 8, 2018 | 10:00 AM
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What was outcome of this? I'm having same issue. I have not checked crank position sensor.
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