Question about 2000 Audi A6

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A6 2.5 tdi possible injector pump failure or timing slip

I have just bought myself a very nice A6 Avant 2.5 tdi on a X reg 2000
the problem being after taking out for a test drive in which it ran a drove lovely then buying it & having to wait a week to pick it up,
when i came to pick it up the dealer drove it round & it was very noisy on which i remarked on, i know diesels are noisy but this was like a knock but it did quieten slightly after a about 10 minutes, then there was lots of smoke from the exhaust as i put my toe down,
I only got 2 miles from where i had bought it from i pulled into the garage & filled up with a full tank of diesel the thing wouldn't start! then it started i moved 10 ft or so to the air pump, then it would not start for love or money, tried jump leads on it as them battery died, then got the RAC out,
it fired on easy star but would not run, the there was fuel getting up to injector pump but low pressure, bypassed the fuel lines & put a direct feed to the injector pump still would not start,
then done a fault code reading which gave 1374 PUMP Timing & 505 INJECTOR COMMENCING OUT OF RANGE, on which they diagnosed a possible timing belt slip!
On getting towed back to the dealer i bought it off i left it with them, they charged the battery over night & it started straight away the next morning & ran fine far a good half hr or so, but they tried to start it that Afternoon & the problem was back!
They had a mechanic out to look at it & he said it was the pump in the diesel tank & it had to be removed & drained to fit a new pump.
but in my mind if there as been a direct feed to the injector pump then all of the fuel system as been bypassed so eliminating the problem being in the fuel tank? plus i am sure you can get to the components in the fuel tank via a panel in the boot, so this makes me very suspicious on what the mechanic is saying.

I know this quite long winded but i need what advice i can get & decide to try & get my money back or not.

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  • helsandal Jan 03, 2009

    i have just bought a x reg 2.5tdi v6 audi a6 avant as a non runner the person who had it before me had the fuel pump timing belt ripped off 6 teeth he fitted a new belt but still could not get it i bought it first place i started was i fitted a new cam belt and pump belt the pump timing was out by a quater of a turn great i thought that must be the problem the next problem was the pump in the fuel tank so i replaced that as well(yes it can be done through a hatch in the boot)any way got fuel up to filter and injection pump and injectors still wont run it will fire but not run immobiliser is working

  • shiny disco Jan 15, 2009

    The problem has been diagnosed as being the module on the injector pump,
    which you can not buy on its own,
    so the whole injector pump as to come off & reconditioned, plus it has to be put on a computer & tuned to the engine,
    a very costly proses as the front of the car has to come off,
    around 4 hrs labor & £600+ VAT just for the pump, so job that will cost well over £1000+

    But luckily the car dealer gave me my money back.
    be carefull if your buying a car with starting problems that will run 1 minute then not the next as the first diagnotics you will get would be the lift pump in the tank & will cost around £300 to be changed then it still will not run, then comes the biggie the injector pump!
    which all in all could cost in excess of £1500 to get to the bottom of.

  • helsandal May 11, 2010

    where is the fuel tank screen?



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I had the same sort of problem withmy A^ 2.5 TDI sports, after the dealer spending approx 1200 quid the problem was still there .
Does the waring light on the dash [glow plug symbol] show under hard acceleration?
After all the so called UK Bosch and Audi -VW experts diagnostics failed to find the fault including changing the sensor injector on NO2 cyl the problem was located by myself after giving up on so called experts { X being un known, spert being drip under pressure] all of the symptoms dissapeared when the fuel tank screen was removed and cleanned, the screen had a 2mm covering that looked like a rubber flap. Some 30,000 miles on all is perfect.

Posted on Jan 24, 2009


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SOURCE: service manual A6 Audi Avant 2006

Take it to the dealer.

Posted on Jun 18, 2009

SOURCE: audi a6 avant 2001 owners manual

I have me radio code, BUT on the screen it says SAFE.
Is there anyone who can tell me what i have to press on the radio to type in that code?

Posted on Oct 07, 2008

  • 5568 Answers

SOURCE: 1998 A6 avant . Electric window fault .

There definitely will be a fuse in the circuit. If you don't know the location of the fuse block, I suggest you buy a manual for your car from Haynes which will contain all such detail and will answer many future questions too.
There is also a relay you need to locate that powers the window circuit when the vehicle is operating which may be in the same housing with the fuse block. 

Posted on Feb 25, 2009

  • 2 Answers

SOURCE: 1999 AUDI A6 avant 2.8L quattro. Car vibrates

bent flywheel

Posted on Nov 29, 2009

  • 32 Answers

SOURCE: 2006 Audi A6 Avant Drivers window control panel

Replace the switch. It has lost connection to the up position.

Posted on Sep 11, 2010

Testimonial: "Thanks for prompt reply. I will have my Audi dealer replace the switch. I will let you know if that works. Thanks."

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