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  1. hannahj

    A4 19. TDI Flat spot

    Hi John, I think the "hissing" sound is probably the air-con, run the car with it off then see if it stops. Our engines are not the same, 99% sure of this, mine is an "AFN", you can check yours by looking at the sticker/label inside the spare wheel well or in the front of your service booklet...
  2. hannahj

    A4 19. TDI Flat spot

    Hi Grifter, Yes I agree, most probabley brake servo assist, but an air leak here will give air pressure concerns further down the line. Mine has been so much better since I "fiddled" with it, i even hit 120mph last week (a first since owning the car) Now my "plug in chip" will be replaced to...
  3. hannahj

    A4 19. TDI Flat spot

    Hi there, I have just had an interesting development with my power loss problems. While playing with the EGR actuator I inadvertantly leant on a hose that goes into the bulk head and towards the master cylinder ???, as i touched the pipe it let out a "hisss", I again repeated this and lo and...
  4. hannahj

    A4 19. TDI Flat spot

    Hello all, This is the follow up story so far!!! Changed the MAF (mine is the more expensive Pierberg type), got this item from GFS car parts (nationwide chain). Small improvement initially but not the big difference I was hoping for (but the MAF was wacked, inside probe broken off) Cost...
  5. hannahj

    '00 2.5tdi clouds of white smoke!!!

    Hi there, is the engine running lumpy at any point in the rev range?? If so I suspect a fueling problem, eg cold fuel valve, not even sure if the audi will have one, but if it has this could be at fault.
  6. hannahj

    Audi a4 tdi 1.9 (110 RED I)

    Can enyone please help, Is the carbon filter element sited behind the front o/side wheel arch a service item, and are there any "common faults" with them. Also is it linked to the EGR / turbo actuator. Also what is the cylinder, black in colour that is located below the turbo, vary close to...
  7. hannahj

    98 A4 TDI(110)

    mine did the same, but it was the "flex joint" which failed. It had cracked and was making a gradualy noisier rattle. I removed the cat pipe, ground off the outer mesh/guard and tig welded the fracture. Fine now. PS I was quoted £200.00 for new cat at local motor factors (and that was with a...
  8. hannahj

    A4 19. TDI Flat spot

    Hi Guys, I have been having a problem when my 1996 110 red I hits 2500rpm, shut off ignition and re-start clears the problem. I have cleaned the MAF (no change), removed the EGR and found it totally caged in oil/carbon, so removed inlet manifold and found it to be the same. Cleaned EGR with...