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Audi A4 B7 2.0 TDI PROBLEMS PROBLEMS PROBLEMS.... HELP!!!!

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by raffhussain, Sep 21, 2011.

  1. chrisk1700
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    chrisk1700 Member

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    [Apr 10, 2012]
    well the pipe round to the cooler looked pretty baggy, and then also inside the inlet, so bobby fizzle knows, im just gonna let audi have it for a techy diagnosis, if i go in there with some nouse as to what im talking about they may work with me a bit and maybe cut the BS.
    #41
  2. z1mma
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    z1mma Member

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    [Apr 10, 2012]
    about a year ago on my way to bristol, after slowing down for police to pass me , it seemed i wasent driving a Turbo diesal but just a normal diesal, no power at all, took ages getting back to speed, it happend few more times during that month, then all of a sudden no problem since that day ... guess it cleaned it self. :D

    /Azeem
    #42
  3. tubby
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    tubby Member

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    [Apr 11, 2012]
    i wish mine would fix its self im driving a 170 model feels like a 1.0 metro, turbo has been sent to turbo tecnics for refurb at a wopping £450 see what happens when it comes back and after i refit turbo,only had the car since dec starting to wish i never bought the piece of cr@p should of stuck with the impreza
    #43
  4. scotty2hotty
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    scotty2hotty Member

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    [Apr 11, 2012]
    Chrisk
    It maybe that the flap in your egr is seized shut or that the motor that operates it has sheered it's teeth on the cog that operates the flap as they are made of plastic if iirc, this happened on my mates a3 2.0 TDI although that did blow a fuse and bring the engine management light on.
    #44
  5. chrisk1700
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    chrisk1700 Member

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    [Apr 16, 2012]
    got my injector readouts today.........

    0.71
    0.31
    1.32
    -2.38
    #45
  6. chrisk1700
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    chrisk1700 Member

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    [Apr 16, 2012]
    how do i check the plastic cog???
    #46
  7. scotty2hotty
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    scotty2hotty Member

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    [Apr 16, 2012]
    i spoke to my friend he said it was his intake flap that had seized and caused a fuse to blow which brought on the engine managment light and also his econ light as the aircon fan runs off the same fuse.
    is this the same for you? if not i may be barking up the wrong tree but no doubt someone will put me right.
    #47
  8. chrisk1700
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    chrisk1700 Member

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    [Apr 16, 2012]
    il have a wee look tomorrow, but no lights on dash and no faults stored on the ecu, i need to strip the motor i think and check that, it WAS seized solid, but iv cleaned it and it does seem to operate manually and i did hear i motor type noise from the motor so i guessed it was fine???????
    #48
  9. Wrath
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    Wrath Well-Known Member

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    [Apr 17, 2012]
    Probably best to check the egr again, just see if the cogs move easily (there is plastic cover on one side, gently take this off and you can operate the cogs with your finger). If the cogs aren't easy to move then that's possibly your problem. Did you clean the EGR with carb cleaner?
    #49
  10. chrisk1700
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    chrisk1700 Member

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    [Apr 17, 2012]
    iv removed the injectors and there going to get sent off now to be checked and refurbed if needed. so whilst its in bits il have a look at the egr again, i used good old fashioned coca cola. works a treat.
    #50
  11. Wrath
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    Wrath Well-Known Member

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    [Apr 17, 2012]
    Coca cola is good but don't use Milkshake, it does naff all :)
    #51
  12. D8UGF
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    D8UGF Member

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    [Apr 19, 2012]
    Hi guys,

    I am conscious I havent updated on my issues for a while. As can be seen form my post way back at the start of this thread my car is under warranty and was experiencing a lot of the issues attributed to idle problems etc. To date I have had replaced under warranty: injectors, harness, dpf sensor, egr valve, tandem pump yet the rough idle still persisted. Over the last couple of weeks I have been aware that the car feels sluggish at motorway speeds where it should be in its power range, I asked Audi to look at this for me, which they did, but as there was no Engine Management Light it appeared that all parameters were within spec.
    This weekend after a long journey down to England the Glow plug light started flashing and the car lost any power, almost like driving an old non-turbo diesel. SMooth revving but very slow revving. Switched engine off, back on again light out and running fine.
    Booked my car into Audi today as they now have a fault code to look at and it appears that the inlet manifold has a crack in it. When I get the car back tomorrow I will let everyone know if the lumpy idle has been resolved with this being changed.

    Dougie
    #52
  13. raffhussain
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    raffhussain Member

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    [Apr 20, 2012]
    :arco: lol.
    #53
  14. Beagles
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    Beagles Member

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    [Apr 22, 2012]
    hi all, im new to the audi thing, not long purchused my audi a3 2.0 tdi 140, 2005 sline, i love the car but only justb noticed this simalar problem, 5-6th gear at low revs causes a judder, raffhussain, did cleaning you EGR valve cure this at all, i thought it was the injectors as its a common problem but on the newer engines, im confused if its the dual mass flywheel, injectors, EGR valve or anything else, help much appreciated. cheers:D
    #54
  15. Wrath
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    Wrath Well-Known Member

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    [Apr 22, 2012]
    It's always worth cleaning out the EGR, I've done it on mine and my Stepdad's Seat. Dead easy.
    #55
  16. Beagles
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    Beagles Member

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    [Apr 22, 2012]
    Thanks Wrath, ill give it ago later in the week when i have time off and let you know if i feel any difference, also been reading about the MR MUSCLE for cleaning out the turbo and that, good idea in you opinion or not? cheers for the replies:)
    #56
  17. Beagles
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    Beagles Member

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    [Apr 22, 2012]
    Thanks Wrath, ill give it ago later in the week when i have time off and let you know if i feel any difference, also been reading about the MR MUSCLE for cleaning out the turbo and that, good idea in you opinion or not? cheers for the replies:)
    #57
  18. D8UGF
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    D8UGF Member

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    [Apr 23, 2012]
    As promised an update on mine. Got the car back from Audi. Apparently there is a small plastic diaphram that sits inside the inlet manifold on the 170 engine which works under vaccuum. The end of this can be seen to the front of the manifold but the majority of it is internal. It appears from what I picked up from the description that the valves (butterflies) inside this manifold become clogged due to carbon build up, this causes the vaccuum to work harder to open and close these, until it gives way at the weakest point, the plastic diaphram. It will cause hesitation and lack of power as the butterflies are not being opened as quickly/fully as they should on full throttle.

    The result is I now have a shiny new manifold as it is a complete unit. The car feels more responsive, better power delivery and pulling very strongly now. I do think the tickover on the car "flutters" still, so I am not convinced that any of the parts I have replaced on the car have contributed directly to this, but it does feel significantly better than it did when I originally bought the vehicle.

    Dougie
    #58
  19. Wrath
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    Wrath Well-Known Member

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    [Apr 23, 2012]
    I didn't use Mr. Muscle mainly because I didn't want the possibility of shafting my engine using a non-engine designed cleaner. Buy a can of Wynn's Carb and Fuel Injector cleaner from Halfrauds.
    #59
  20. raffhussain
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    raffhussain Member

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    [Apr 23, 2012]
    not tried it either. dont want to risk any damage, ive tried a few cleaners, top 2 are forte and BG244. used BG244 recenctly and it does want it says on the tin.
    #60
  21. raffhussain
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    raffhussain Member

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    [Apr 26, 2012]
    Hi ppl
    Update for you, 2 weeks ago turbo blow, was in 2. lol. was able to source a new turbo. futted last week and then found out one of the pipes had a leak. Got a pipe from fleabay 20 quid. stealers wanted 130. lol. fitted it last night. also had a problem with MAF when id take the MAF out the car would make a humming noise and when it put it back in it would disappear. but this was when i 1st started the car so ECU wasnt picking up any faults with the MAF. after i drove the car i then rechecked the MAF the car would sound the same with or without the MAF. cleaned my MAF with contact cleaner. WOW what a difference. car pulls better than before. idle is alot better. car would missfire before betweem 1500-2000rpm. this has now disappeared. use to puff black smoke on acceleration, this has also disappeared. im well chuffed. lol. hope it lasts. lol. well Ive got engine management light on, but not effect the cars driving. I can live with that and might be due to the MAF but will find out more after it get it VAG. Thanks for all your input ppl. been a great help
    #61
  22. Wrath
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    Wrath Well-Known Member

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    [Apr 26, 2012]
    Forgot about doing the MAF sensor. Whereabouts is it and is it easy to clean?
    #62
  23. raffhussain
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    raffhussain Member

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    [Apr 26, 2012]
    #63
  24. alpesh26
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    alpesh26 Member

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    [Apr 29, 2012]
    Raff - when you say low revs in all gears, how low are we talking? my 1.9tdi seems to have developed a shudder and loss of power at 1800-2000rpm in 4th and 5th gear.

    I had the car checked by 2 mechanics, one seems to think its the EGR valve and the other thinks its my remap (remap company don't want to know because its 1 month out of warranty, b*****ds!).

    I'm not really getting any black smoke apart from sometimes on start up when it decides to stink the garage out
    #64
  25. raffhussain
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    raffhussain Member

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    [Apr 30, 2012]
    if they think is the EGR give it a clean and check to see if the flap opens and closes. its not hard to take apart. For the 1.9tdi there is a D.I.Y and i will try and post for you. its cheap option. mine did it at low RPMs. it would feel like car misfired and sometimes car would start jerking. Ive had it sorted now after the turbo blow. changed and its not done it since. the cause was sticky turbo vanes. yours sounds like something my brother came across driving on the motorway in his 1.9tdi. loss of power. if he restarted engine it would regain power and then would happen again. after taking turbo off, vanes were fine. actuator was slightly sticking. which were causing overboost so was going into limp mode, changed this with my off old turbo and new MAF. car drives better than before. Also relating the remap, mines been mapped and now turbos been replaced it drives better than before.

    hope that helps
    #65
  26. alpesh26
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    alpesh26 Member

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    [Apr 30, 2012]
    I'm gonna give the EGR valve and inlet manifold a clean at the weekend seeing as it costs very little to do. I had a look in the B6 forum on how to clean the EGR valve and theres a few guides in there relating to the 1.9.
    Mine isnt going into limp mode, it just feels like its in too high of a gear and the car starts to shake as goes the gear lever. Its funny as it only does it between 1800-2000 rpm which i think is when the EGR valve opens. The car also seems to have lost the urgency it used to have after i got it mapped.
    I've had the car scanned with VAS and its not overboosting or leaving any fault codes. Will see how the clean of the EGR valve goes, if its successful i may look into blanking the valve off altogether.
    #66
  27. eddscott
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    eddscott Member

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    [Apr 30, 2012]
    How much was the manifold?
    #67
  28. D8UGF
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    D8UGF Member

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    [Apr 30, 2012]
    Hi mate, it was free, I have a used car warranty from Audi. But, I think the part is in the region of 500 pounds plus VAT and fittting, so quite an expensive bit. Like most bits!
    That said, I still have the lumpy idle even after all the parts that have been replaced.

    DOugie
    #68
  29. N4th4N
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    N4th4N New Member

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    [May 17, 2012]
    Hi

    I have a 2006 Audi A4 2.0 TDV TDI Saloon, Recently had the timing belt changed as the engine was shuddering and it was coming up to the 75k mark, hoping this would resolve the problem, it did........for 1 day! since then if im accelerating up to 3000 revs in 3rd gear the engine gives a shudder as if it cant give any more power, didnt this before, also does the same in 6th gear if driving above 70 MPH. ive had various people advising deferent things like mis firing or clogged air filters and not enough air flow, checked the air flow which seems to be fine not the mis firing as not the best with mechanical jobs. Any suggestions at what the problem could be?

    Another problem i have is a knocking noise coming from the front offside wheel area. I had been told this could be a CV joint, but after looking into this i dont think it is. The noise is like metal tapping metal. Now ive had my local mechanic check all the ball joints, suspension arms springs and everything he could in the area and he cant seem to find any problems. Anyone had a similar problem that can help me out?

    Thanks
    #69
  30. D8UGF
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    D8UGF Member

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    [May 18, 2012]
    Thats weird Nathan,

    I have been having the same problem. The noise does not always happen, it is most noticible when going over light bumps or rough surfaces but when larger bumps are hit it doesnt make the noise. As a result Audi have changed a driveshaft as they said it had excessive play and have now changed the caliper carrier as they said it had excessive wear on it also. It is still there. I think that the problem is brake pads rattling. Have you tried touching the brake pedal lightly when the noise happens? I have found that this stops the noise.

    As for your missfire, it really could be any number of things, it does sound quite like my problem which was resolved with the inlet manifold being replaced.

    Dougie
    #70
  31. weigel
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    weigel New Member

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    [Aug 8, 2012]
    Hi N4th4n

    did you ever find the cause of the knocking? I have the same car and in cardiff maybe there something in the water or diesel! :|

    had my injectors done foc by audi when there was no problem now the car feels slower and getting underboost issues! time to clean out the inlet and egr I think
    #71
  32. andygilljoe
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    andygilljoe New Member

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    [Sep 18, 2012]
    #72
  33. lancer
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    lancer New Member

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    [Dec 23, 2012]
    hey wot year is ur car , trying to find out about the oil pump failure on b7
    #73
  34. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    [Dec 23, 2012]
    Welcome to the forum. You can find pretty much everything there is to know about the oil pump issue by reading the sticky thread on the subject at the very top of this forum.
    #74
  35. lancer
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    lancer New Member

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    [Dec 23, 2012]
    hey buddy can u help me wit a few things as i am new to this
    #75
  36. sam0136
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    sam0136 New Member

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    [Jan 21, 2013]
    Hello everyone,

    I have a audi a4 2.0 tdi on a 2005 plate and only drove the damn car for a month until the car over revved and blew the engine up I have replaced nearly everything and still the car is not running correctly. I have read about the balance shaft/oil pump issues if there is a common fault on these cars we need to do something about it like contact Domonic littlewood - 020 75987210.
    #76
  37. stevie hensh
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    stevie hensh New Member

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    [Aug 21, 2013]


    Can you fix mine I live in doncaster
    steve
    #77
  38. stevie hensh
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    stevie hensh New Member

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    [Aug 21, 2013]
    Can you have a look at my A4 170 se had the dpf removed, but running a bit rough and lumpy think it's the egr carboned up

    steve
    #78
  39. phil_w
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    phil_w Member VCDS Map User

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    [Dec 24, 2013]
    Seems like as good a post as any to put a question out there...

    A4 B7 TDI 2.0 170 2008 - have a noise under acceleration/boost - can only be described as kind of a grinding/spinning noise (don't think I could call it a whooshing) - have just had the turbo swapped under extended warranty but noise still there - any experts point me in the right direction? What would a boost leak sound like? Many thanks :)
    #79
  40. albaudis
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    albaudis New Member

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    [May 2, 2014]
    Unlike the stealerships the guys (Matt and Dominic) @ London re-maps did a fantastic job on my 2006 170 A4 even when there was an electrical fault I tried but only realised that the 15Amp fuse near the ECU was blowing, they traced the fault, engine mount sensors that were faulty had to leave the car with them for 3 days to trace and repair but it was well done, great economy and power returned after dpf delete and it costs me only £100 for the repair after the dpf delete.
    #80

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