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The fuse holder wire bolts to a relay block inside the car usually, the plugs usually just come of if you hold the wires firmly and wiggle side to side and pull at the same time, it works for me anyway, some one else might have a better method.

Without relay 109 working the fuel pump relay also will not work because the engine ECU provides the earth for the fuel pump relay so, like previous people have said, just put a switch to disconnect the earth to relay 109.

I see from your profile picture that the mk1 transit is the non-diesel version, which had either the V4 1700, or v4 2l engine fitted so I can imagine space is at a premium as regards to fmic and radiator fitment. Would be great if you could post some pictures up of the conversion so far.

The oil cooler, this cause's oil in the water if it fails, egr only has water passing through it not oil

I'm afraid you cannot fit that filter housing onto your block, you will need to change the block or swap the engine for the other one

Have you seen these posts yet ? https://forums.tdiclub.com/index.php?threads/00309-isnt-really-washer-solution-metering.148065/ https://forums.tdiclub.com/index.php?threads/unknown-passat-dtc-valois.29820/ Might help you out

That sensor isn't fitted to either one of the B4 Passat's that my partner and myself own so no issues with that. Which ECU are you using ?

You just need to select the manual code block using VCDS, and that ECU is not flashable over OBD

The last time that happened to me I found that the linkage inside the pump had come off the arm that operates the collar on the plunger.

Ok so my apologies to Blueattack, he is a member on this website. Here is the link to the information:- https://forums.tdiclub.com/index.php?threads/ecu-swap-68-msa15-to-121-edc15-manual-created.320882/

Para ser honesto, não tenho tempo para fazer isso por você. Eu trabalho em tempo integral em uma garagem durante a semana e nos fins de semana tenho coisas para fazer em casa. Faça o que puder e se tiver problemas, tentarei ajudá-lo

There are some guides floating about, I have one from a guy called Blueattack, I think I got it off of the ECU Connections website, but not 100% sure, It's only a guide, because the wire colours vary between marques, but the pin numbers are usually the same. You need to be a member to view...

You need to write in English. and there is no diagram or table. If you use the later Audi engine loom that plugs into the ECU and then you have to wire in the 14 pin plug on that loom for the oil, temperature, as well as the wire in that plug which go's to pin 88 in the engine loom plug as well...

I personally would not fit that engine into any vehicle. They have timing chain, oil pump and crankshaft issues. At work there sit's one of these engines that I am just fitting a new crankshaft to. The reason ? it spun a main bearing on the crankshaft main bearing journel and connecting rod. The...

I totally agree with Windex, I have converted my B3 & B4 to the O2J shifter and it's much improved the gear selection, I've also fitted the short shift Audi TT short shift arm, but to be honest I can't notice the difference

Is this EDC 16 ? If so be very careful as to what you insert into the ecu plug because if the test probe is too large it opens up the terminal and yes you have the correct resistance's but when you plug it back together the terminal is now too large to make correct contact with the pin, Ask me...

And you are 100% sure the pedal is correctly wired, because the idle speed at 1200 usually indicates the pedal is wired wrong. Are you using 5 or 6 wires to the pedal and which type of pedal is it ?

Just something else I forgot to ask, is the idle a normal idle, approx 900rpm or a faster idle, like 1200rpm ?

If the engine starts and idles then it is not an immo fault. I would connect vag-com and check that when you push the accelerator pedal down it go's from 0-100%. If not then you have a wiring issue or ECU software problem.

Here is also a good write up with pictures too, which may help you:- https://www.myturbodiesel.com/d2/1000q/a3b4/injection-pump-alh-swap-repair-tdi.htm