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Fuel related Problem - No power

  #1  
Old 03-30-2007, 03:54 PM
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Default Fuel related Problem - No power

Hi all... i would be grateful for any help, im completly baffelled with this problem.

I have an audi a3, 1.6 99 with about 85000 miles on it. It was driving fine and then one day she packs up.

I have checked the fuses and they are in good working order.
I ordered and fitted a new relay, thats in good working order too. (if anyone is intrested its relay number 167, i'll post pics up when i can)
I checked the circuit using a voltmeter, i am a getting readings for the other fuses but not the fuel pump fuse, even with the new relay and fuse in place.
I can't hear the fuel pump on start up (because no power is getting to it) so i havent replaced it thinking that the problem lies else where.
So does any1 have any ideas on what might be the problem...


Thanks.
 
  #2  
Old 03-30-2007, 04:05 PM
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Default RE: Fuel related Problem - No power

when you tun the ignition on do you hear the fuel pump cycle?? which means fuel pressure has been delivered, relay numbers 167 means nothing
 
  #3  
Old 03-30-2007, 04:07 PM
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Default RE: Fuel related Problem - No power

hi, thank you for the quick reply.

when i turn the ignition (just before i crank it) i cannot hear the fuel pump.
 
  #4  
Old 03-30-2007, 04:17 PM
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Default RE: Fuel related Problem - No power

#

[IMG]local://upfiles/12092/B0E63A7D5AAD4A8FBA2EC4205FC8FDCF.jpg[/IMG]

[IMG]local://upfiles/12092/9C89F7B543FF428488F9BAA6F29A00AF.jpg[/IMG]
 
  #5  
Old 03-30-2007, 04:21 PM
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Default RE: Fuel related Problem - No power

Hiya, yea, those are the fuses and relays that i have checked. But it seems to be that no power is getting to them either.. thats why im a bit baffeled... When i check the other fuses, they give a reading...
[:-]
 
  #6  
Old 03-30-2007, 04:26 PM
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Default RE: Fuel related Problem - No power

crank sensor or immobiliser could be the problem, crank sensor initiates the start up procedure so fault codes will be evident if you have a code reader
 
  #7  
Old 03-30-2007, 04:30 PM
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Default RE: Fuel related Problem - No power

hmm.. i dont have a code reader..
sorry if this sounds like a dumb question... but what a where is the crank sensor? again, i really appreaciate the help.
 
  #8  
Old 03-30-2007, 04:35 PM
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Default RE: Fuel related Problem - No power

your very welcome mate, crank sensor is the speed sensor so if it fails then the ECU sees the engine as dead and turns every thing off as in theft mode ( assuming that is the problem ) but its getting better with your info
 
  #9  
Old 03-30-2007, 04:38 PM
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Default RE: Fuel related Problem - No power

ah ok, i've just done a quick search on the net about crank sensors, i will read up on this soon. Im guess that this is likely to be the problem.
Do i need to replace the crank sensor or can i reset it somehow... (im sorry if again it is a dumb question but u may laugh at my expense lol...)
I just serching on the net now for its position in the car.
 
  #10  
Old 03-30-2007, 04:42 PM
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Default RE: Fuel related Problem - No power

# one of two

[IMG]local://upfiles/12092/2BD3B5C195FB400CB7679723C5D0ED01.jpg[/IMG]
 

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