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n75

  1. N75 Valve - Cheaper Alternatives?

    Engine & Gearbox
    Hi All, after reading many discussions on the N75 I have come to the conclusion that mine is goosed and that is the cause of my low power. I have a 2.5tdi ACV. Looking at buying a new one and they are expensive! There seems to be a lot of "alternatives" which are a lot cheaper. So my...
  2. New N75 Valve- now regular ticking...

    Engine & Gearbox
    Just fitted a new N75 valve to stop the blooming mooing. Everything works fine- in fact better than fine, really happy. However the valve is ticking- as the rpm increases so does the ticking. It doesn't seem to tick when idle, only when the engine rpm is increased. I can hear it clearly in the...
  3. White smoke from exhaust and engine/turbo...please help!

    Engine & Gearbox
    Hi all, Was hoping for a bit of help and have read through quite a few of the posts on here and they have been v.useful so thanks in advance. Just bought a VW T4 2.5tdi 2002 (Hightop camper conversion) from a dealer. Driven it to Germany and we have noticed we get white smoke when driving and...
  4. power lacking 2.5 AVS 1997

    Engine & Gearbox
    Hi everyone, firstly, thank you for maintaining this wonderful forum and for all the effort which went into writing those great"fix it yourself" guides!!!T: Secondly, I recently bought a 2.5 TDI AVS 1997 and I have been feeling like it was lacking some severe power, was going up the hills...
  5. no boost issues on ACV 2.5 T4

    Engine & Gearbox
    Hello, my2003 t4 102bhp is not boosting...sent it to the garage and they have said ECU has no signal to N75 and said I need a new ECU but took it home and scanned it myself and I managed to clear all faults but still no boost can anyone help with it? just done a scan of my van and it's showing...
  6. AXD N75 Valve Tubing

    Engine & Gearbox
    Hello. I have a quick question. What size are the hoses that connect to the N75 valve on an AXD engine? I would like to buy some silicone replacements but a search of this site didn't produce anything. Many thanks Julia :)
  7. Moo Valve, N75, Turbo, Pressure Converter, Charge Pressure, Solenoid Valve

    Engine & Gearbox
    Diagram and part numbers/descriptions for this valve for your reference - remember this is an 08 Caravelle, 2.5tdi 130PS, AXD/BNZ engine (?) with part numbers linked to this particular chassis number. So check yours first. http://www.vwt4forum.co.uk/album.php?albumid=23810 Lots of names for...
  8. T4 2.5 TDi Low on power and occasional misfire?! MAF? N75?

    Engine & Gearbox
    Hi everyone, I've been a member for a while now and often look through the posts and have always found the pool of knowledge pretty impressive so I thought I'd test the waters myself and see what everyone has to say! VAN: '01 T4 2.5 Tdi Particulate Filter fitted (to comply with London...
  9. Good Mechanic/ Diagnostics Near Radstock Bath

    Engine & Gearbox
    Hi I have a 2007 2.5TDI T5 4motion Been having overboost/turbo probs which I've posted about previously. I don't have the time or skill to diagnose the problem myself so have left it in the hands of a local specialist. He has changed the n75 valve and the turbo but the van still goes into limp...
  10. AJT turbo wastegate opening pressure

    Engine & Gearbox
    Does anyone know at what pressure the wastegate should start to move on a 2.5TDi AJT engine please?
  11. Power loss at power demand 2.5tdi

    Engine & Gearbox
    My T4 goes very well indeed as it comes up to the 380k mile mark, but: At 3000 rpm (in 5th) on the motorway and going up hill the power suddenly drops off and the van slows (disconcerting on overtaking). Also, I tow a horse trailer and have done for several years, again on pulling up hill (not...
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