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AudiDoc, Independent Audi Shop Owner
Category: Audi
Satisfied Customers: 1695
Experience:  I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
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2004 Audi Allroad, crank no start, I have replaced fuel

Customer Question

2004 Audi Allroad, crank no start, I have replaced fuel pump, crank position sensor and am re-charging battery to try new fuel pump relay. had no codes related to non-start other than low voltage which was probably from all the attempts to start after previous repair attempt. Any other thoughts?
JA: Are you certain it's the fuel pressure sensor that's in need of attention? What about the fuel rail? Have you checked it yet?
Customer: Not yet, where would I pull the rail to check for fuel pressure?
JA: Are you fixing your Allroad yourself? What have you tried so far?
Customer: Was in prior message, new fuel pump, new crank position sensor, full trouble code scan. Only engine code was P1602 low voltage.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No, just let me try the fuel pump relay and a re-charged battery first.
Submitted: 8 months ago.
Category: Audi
Expert:  Chad Farhat replied 8 months ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 8 months ago.

hey how are you

1- a low battery will cause issue so make sure there is 12 volt on battery

2- you need fuel & spark to start ,so what are we missing fuel ,spark or both ?

3- are ignition coil has power on them ?

4- do you hear the fuel pump should run for few seconds when you switch from off to on to prime the fuel rail is it ?

5- are the injectors pulsing ?

6- any security light flashing on dash while you trying to start

Please let me know

Thank You

Chad Farhat

ASE Certified Technician