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Thread: Hesitation

  1. July 2nd, 2014, 15:23 #1
    kilian tuning
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    Hesitation

    Hi all,

    Went for a spin today and noticed a whining sound and occasionally ticking sound coming from around the rear wheel area, not constant, but for little periods.
    Sometimes suddenly louder.
    Noticed also on full throttle a huge hesitation, couldnt get more than 3000 rpm, gearchanges are smooth, but couldnt reach kickdown.
    Didnt had a Phone with me to record the sound.

    Looks like fuelpump?, cos of the area the whining is coming from, and the hesitation?
    Dont know the above is typical for fuelpump faillure...?
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  2. July 2nd, 2014, 16:58 #2
    hahnmgh63
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    I haven't had one go on the RS6 yet either but from your description of the Hesitation and noise together it sounds likely.
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  3. July 2nd, 2014, 18:05 #3
    kilian tuning
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    i hope its just the fuelfilter...anyone got an pic/idea where its located?
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  4. July 2nd, 2014, 18:16 #4
    Corbett
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    Quote Originally Posted by kilian tuning View Post
    i hope its just the fuelfilter...anyone got an pic/idea where its located?
    Passenger side under car just in front of rear wheel
    2004 Sportec RS600 + 6MT + e85
    Fastest RS6 in the USA
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  5. July 2nd, 2014, 18:42 #5
    kilian tuning
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    Thanks all, will have a look
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  6. July 7th, 2014, 16:48 #6
    kilian tuning
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    Started to take out the fuel filter, but cant get the number 3 out cos the nut on the other side is turning along with the bold and hits what i think is a drc pipe, tried some wd40 on it...
    The space im working in wont help either...and dont like to work underneath with just my head.
    Looks like the filter(Bosch) has never been replaced.

    http://i1229.photobucket.com/albums/...pscba8f83d.png
    http://i1229.photobucket.com/albums/...ps0ee3ac87.jpg
    http://i1229.photobucket.com/albums/...ps21030c7a.jpg
    http://i1229.photobucket.com/albums/...ps2c97d100.jpg
    http://i1229.photobucket.com/albums/...ps37ab5b3a.jpg
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  7. August 24th, 2014, 15:36 #7
    kilian tuning
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    Unfortunately the new fuelfilter didnt solve it, still making odd noises from the rear wheel area now and then.
    So next step would be one of the fuelpumps... no DIY im afraid...
    Will the fuelpump throw up codes? beside the starvation of fuel to the engine on full throttle?
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  8. August 24th, 2014, 16:41 #8
    kilian tuning
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    http://vid1229.photobucket.com/album...ps6f4778a3.mp4
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  9. August 24th, 2014, 17:11 #9
    lswing
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    Quote Originally Posted by kilian tuning View Post
    http://vid1229.photobucket.com/album...ps6f4778a3.mp4
    Can't really hear a thing...need much better audio...
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  10. September 20th, 2014, 08:16 #10
    kilian tuning
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    Do i need special tools the replace the fuel pump inside the fueltank?
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  11. September 20th, 2014, 14:10 #11
    Zmey
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    Pressure test the car firsts. Fuel starvation might throw a code something like maximum pressure exceeded, do you have any codes? After 3k Rpms does it feel like the car hits a wall just gives up accelerating?
    6spd complete
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  12. September 20th, 2014, 20:08 #12
    kilian tuning
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    Quote Originally Posted by Zmey View Post
    Pressure test the car firsts. Fuel starvation might throw a code something like maximum pressure exceeded, do you have any codes? After 3k Rpms does it feel like the car hits a wall just gives up accelerating?
    yes indeed.
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  13. September 25th, 2014, 15:04 #13
    kilian tuning
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    Address 17: Instruments Labels: 4B0-920-xxx-17.lbl
    Control Module Part Number: 4B0 920 937 B
    Component and/or Version: KOMBI+WEGFAHRS. VDO D11
    Software Coding: 01084
    Work shop Code: WSC 00215

    1 Fault Found:

    01177 - Engine Control Unit
    49-00 - No Communications
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
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  14. September 26th, 2014, 03:31 #14
    Avus-RS6
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    Well that's not good.
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  15. September 27th, 2014, 03:10 #15
    A4V8swap
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    My car had severe hesistation out of no where. Drove 100% perfect before. The secondary external fuel pump shit the bed. Car would barely run though. Swapped out to a Bosch 044 and all is well now.
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  16. September 27th, 2014, 08:52 #16
    kilian tuning
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    Did it make noise from the fuelpump area?
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
    MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
    MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
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  17. September 27th, 2014, 12:36 #17
    A4V8swap
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    No not that I noticed.
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  18. September 27th, 2014, 20:52 #18
    kilian tuning
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    Could a bad external fuel pump make the inner fuelpump noisey?
    Mugello Blue C5 RS6 Avant Viper Tuning ECU/TCU
    MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
    MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
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