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  1. And it begins TDI conversion ABL to AHU

    Engine & Gearbox
    So after much research, pondering and procrastinating the day is here. Purchased a P reg AHU powered mk3 golf some 12months ago now, full service history and a little over 140k on the clock, popped an MOT on it, have been using it as a little run around, and learner car for the wife since...
  2. Ahu t4 coolant temp wiring help please

    Electrical
    Guys I am new to the t4 game and really need some help I have just brought a 2000 plate t4 which has the Ahu 1.9 tdi plumbed in but I have no coolant temp on my gauge basically what I want to know is what wires from the Ahu engine loom go to the t4 loom at the drivers foot well fuse box I know a...
  3. TDI conversion - PAS pump belt too long?

    Engine & Gearbox
    I've been living with my conversion for a couple of years now and it's come the time to change the PAS belt. Unfortunately, the replacement belt seems to be too long and even at the max I can tighten it, it still has too much play. The VW belt was 10x648 and the replacement part (non VW) is...
  4. Tdi conversion - Fit air con from mk3 golf?

    Engine & Gearbox
    I'm in the midst of dropping an ahu tdi unit from a mk3 golf into my early t4, and have been trying to figure out whether I can fit the air con from the golf in while I'm at it. It's only basic air con so not the climatronic system, so hopefully it shouldn't be too complicated. Has anyone done...
  5. Mk3 Golf GL TDI 1997 with AHU engine 185k

    VAG Vehicle Sales
    Hey all, I'm selling our beloved Golf (named Desmond) as I just don't have the time to keep him on the road. I originally wanted to keep him for a TDI conversion on our van but sadly the MOT is almost due and he needs bodywork. Ideally this car will go to someone who wants to to a TDI...
  6. 1.9tdi conversion woes

    Engine & Gearbox
    Just taken my van in as on top of alot of other issues I now have a leak coming from the back of the fuel pump and have been told that a new one will cost around £1000 because the engine is an AHU from a mark 3 golf and they are discontinued / even if I get a second hand one it would need to be...
  7. Help! Ahu engine conversion into 1.9td t4

    Engine & Gearbox
    Hi, i am currently in the middle of converting my T4 to run an AHU 1.9tdi motor out of an Audi A4 on a P reg. I thought all was going well until i have come to start wiring it up. The engine is fitted, pretty much the same method as the 1Z conversions i've read about on the forum. But i can't...
  8. TDi Conversion Yellow plastic fuel pipe???

    Engine & Gearbox
    My van was ready to go back on the road when it started dieseiling. We think it is something to do with a yellow plastic pipe coming from the fuel filter that was part of the ABL engine as the fuel pump in the Golf only had two feeds. I am not sure how they connected it but am hoping this is no...
  9. AHU Tdi conversion ignition question

    Engine & Gearbox
    Stripping...... a 1.9 seat toledo AHU Mk1 here at the moment. Engine side is done. Working on the inside, I have the air bag, wheel, and clocks out. Do I need the ignition barrel or just the immobilizer coil? And how the hell do you get it off? I have the coil and the allen head bolt removed...
  10. Vw 1.9tdi ahu parts Abl parts

    Engine & Gearbox
    Hi all I have a complete 1.9tdi ahu head in very good condition + injector pump, turbo, manifold, wire loom, ecu, all sensor, key, piston an conrods from the same car for offers, there's also a alternator, starter motor, water pump, engine back plate file pump bracket. Anyone interested let me...
  11. Team 1.9TDI information library.

    Engine & Gearbox
    Its time to put all the TDi conversion threads in one place to help others as its a bit of a mission to find information through so many lost threads. Please can all 1.9tdi owners log all your threads relating to your conversion work so we have them all in one place. This seems like a good idea...
  12. TDI AHU engine problems ongoing, suggestions please.

    Engine & Gearbox
    As most of you are aware I am slowly losing the will to live with the problems on my 1997 AHU engine in my van. Its time to share the good, the bad and the ugly +the things I have checked/replaced already. Any suggestions and methods for diagnosing would be appreciated. Applologies for the...
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