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Help car wont start ☹️

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#1 Pizza_time

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Posted 26 December 2016 - 10:21 PM

Ok so im a bit depeserate now guys and need help with my Audi A3 2.0 tdi yes i know not mk4 but hoping someone can maybe point me in the right direction.

Problem is its not starting and just cranking over ive checked with vcds and no errors showing everything seems fine.
However there no noise of the fuel pump priming when igniton is on i know theres a secondery fuel pump at the front of the car but nothing

Ive checked with vcds and both work fine as in activated them via vcds but with the key in they dont work

Car details
A3 2.0 tdi 2010
Cbab engine


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#2 TomasLT

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Posted 27 December 2016 - 09:13 AM

Just guessing. There should be a relay for the pump. Try checking that.


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#3 Pizza_time

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Posted 27 December 2016 - 10:50 AM

That's what u thought at first but the relay works fine when I test it via vcds


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#4 TomasLT

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Posted 27 December 2016 - 03:01 PM

Just guessing again. Ignition is a remote to relay. Vcds test bypasses it. So I would look at ignition, maybe there's bad connection, broken wire, still may be bad relay. Multimeter and stabbing things.


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#5 Pizza_time

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Posted 27 December 2016 - 06:58 PM

So I tried again today with my multi metre prodding the lot and all seems fine just don't fire up
So I tested the fuel pump relays again via vcds all seem to work fine so I need to figure out where the power for the relays are coming from





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