injection sensor from an AAZ pump used for a revcounter pickup????

[regcheeseman]

  The sensor I'm thinking of is the "start of injection" sensor that screws into the IP where you'd normally insert the timing gauge... measures and then signals pressure as the plunger starts its injection cycle.

That's the fellow! But as most of the UK ones are fitted to non ECU AAZ engines, I'm unsure that it is the same as your 5V signalling version?

Does the yellow jacket state an operating pressure for the sensor?

[ryanp]

is this the one you speak of reg?



at the top of this pic, it's got a yellow wire, cant remember the other one!

Ry

[burn_your_money]

Ryan what is the sensor on the right? Crank pickup?

[Powered by Spearco]

Looks like a boost ref. sens. from a MK4.

[aidan]

I've just picked up a late 1Y engine, similar pump apart from the LDA.
I'm putting this in a petrol MK2, so if you can give some guidance I can tell you if it works ok.
If anyone can tell me if the engine will run with just with 12v to the stop solenoid (once the black box is removed) that would be great?

[Vincent Waldon]

I've just picked up a late 1Y engine, similar pump apart from the LDA.
I'm putting this in a petrol MK2, so if you can give some guidance I can tell you if it works ok.
If anyone can tell me if the engine will run with just with 12v to the stop solenoid (once the black box is removed) that would be great?

If you could snap a couple of pictures we could probably help more, since there's so many different flavours of pumps out there, but if it's got the sensor in the picture above bolted into the high pressure end it probably also has an electronic timing control bolted to the side...  and so won't run very well without the ECU it is designed to operate with.

[aidan]

It has the immobiliser box and 'injection sensor' shown in first photo, actuator behind the pump and another device underneath the fuel return banjo shown in the second photo, and the last photo is the same as one already shown, this is at the bottom of the pump.

<a href="http://s17.photobucket.com/albums/b78/aidanb19/?action=view&current=AAAA0233.jpg" target="_blank"><img src="http://i17.photobucket.com/albums/b78/aidanb19/AAAA0233.jpg" border="0" alt="Photobucket"></a>
<a href="http://s17.photobucket.com/albums/b78/aidanb19/?action=view&current=AAAA0234.jpg" target="_blank"><img src="http://i17.photobucket.com/albums/b78/aidanb19/AAAA0234.jpg" border="0" alt="Photobucket"></a>
<a href="http://s17.photobucket.com/albums/b78/aidanb19/?action=view&current=AAAA0235.jpg" target="_blank"><img src="http://i17.photobucket.com/albums/b78/aidanb19/AAAA0235.jpg" border="0" alt="Photobucket"></a>

[Vincent Waldon]

Hopefully others with more direct experience will weigh in, but imho that third picture (showing the electronic advance control) is the "smoking gun"... meaning the pump is the "just about a TDI pump but not quite" version that needs an ECU of sorts to run properly.  I believe it will likely start for you with just a wire to the stop solenoid but won't likely have any power, since the fuel timing won't be being actively controlled.

Just my understanding based on your pictures... as I say someone else may say "I've got that exact pump and..." ;-)

[aidan]

What a mess my last post was!

Not good I suppose. Do you know what the other powered parts are for? I'm just not used to semi-electronic pumps!

[ryanp]

Yeah that was a 3 bar MAP sensor from a PD150 Mk4, i'm sending all those parts to a friend to control his VNT on his crappy rover, lol

The 1y has the sensor you guy's need, i'm sure i could get more steady away i'm sure but i do want a couple myself!

Aiden, do what we are doing and whack a turbo on that 1y, N/A=Gay! then you can take the crappy pump off and fit a 1.6td one!

[truckinwagen]

The 1y has the sensor you guy's need, i'm sure i could get more steady away i'm sure but i do want a couple myself!

if you do find some that you would be willing to share let me know!

[aidan]

Aiden, do what we are doing and whack a turbo on that 1y, N/A=Gay! then you can take the crappy pump off and fit a 1.6td one!

Its going with an auto box, and the starter is exactly where the turbo would be unfortunately. Its not for me anyway, and I still havethe 1Z sitting there waiting

[markb]

I'm using an AAZ with the electronic advance in my mk2 conversion.

As I said earlier in this thread, I tried to make a circuit to control the advance but my start of injection sensor (the one pictured above) was stuffed and so in the end I just decided to "suck it and see" and it runs perfectly, plenty of power even on the standard k03 with just some extra fuel and boost.

From my understanding of the electronic "advance", the solenoid can only reduce the amount of pressure in the advance mechanism and therefore retard timing when it's "on", it cannot add extra advance.

Of course this is assuming that the pump's pressure reg and timing springs are the same as in the non-controlled versions.

In the next couple of months I will see if I can do some more investigating on this pump as I'm just about to rebuild my Caddy's AAZ with an 11mm head, VNT turbo etc. to go drag racing with in the VWDRC. While I'm rebuilding this pump I'll try and look at the electronic advance version to see if I can spot any differences.

But as I said earlier, it runs very well with the advance control disconnected and has done for ~6000miles now, and I don't nurse it

Just as an extra note, while I was getting some parts from the scrap (junk) yard at the weekend, I picked up another one of those sensors from a 1y, maybe this one will work!

Mark.

[aidan]

Mark,
Nothing has 12v then other than the stop solenoid? How did you find starting in the recent cold weather?

[markb]

Nope, in my setup only the fuel cut-off solenoid has 12V on it.

Well I did have to leave my glow-plug switch on for slightly longer than usual, but still no problem.

(By the way - I agree with the others... Turbo it - who wants an auto anyway!)