Hall sensor tech

[gtx]

Re: Hall sensor tech

good point on the crank sensor gtx. maybe diggin' too deep here (haven't seen the car) but is the distributor turning when you crank it? you would have no signal if the timing belt was broken. have you put a noid lite on the injectors(or LED test lite) ahhhh...blind, no start diagnosis

good luck!

regardless you should have spark off the coil wire,whether the t-belt is broken
or not..

[94gti]

Re: Hall sensor tech

Thanks for the replies guys...sorry I should have described my set up a bit better. I have an aba16v in my mk3, and it is running digi 1.


I still have no spark, I am very stumped. I have checked all my wiring about 10000 times, changed batteries and, swapped ecus.


Could it be my ecu or fuel pump relay?

[94gti]

Re: Hall sensor tech

Well with the new relay, I have power at my hall sensor, but it seems my injectors and fuel pump are constantly on.

[Satnam]

Re: Hall sensor tech

Well with the new relay, I have power at my hall sensor, but it seems my injectors and fuel pump are constantly on.

so fuel is constantly pouring into the cylinders, and the fuel pump is staying on to supply the injectors. - you pulled out a sparkplug and can see this happening?

I don't know anything about these motors and engine management system so all the following suggestions may be wrong.

How about checking the coil.
1) you should measure a low resistance from the primary side to ground - that's the 12v side. you should also measure a low resistance from the secondary side to ground also - the sparkplug wire side. If either is too high - let's say over 500ohms or so then the coil is bad.

2) To test the coil a different way, you should be able to connect a sparkplug to the secondary side, ground the sparkplug to engine somewhere and apply 12v to the primary side the remove the 12v - should see a spark on the plug. Coilpacks can be checked the same way.

Maybe check the Hall effect sensor.
to check the hall effect sensor you can put a multimeter on the output wire of the sensor - measure DC voltage, crank engine and you will see the votage change. This hopefully means the sensor works. I've replaced one of these sensors on a car, and that was the test I used.

there is a lot of other good advice in this thread which you haven't replied to.

[GTIguy]

Re: Hall sensor tech

why dont you tell us everything about the car. i see you live in B.C. you must have done some sort of engine swap for this car, brought it from europe? you've got tons of feedback before you even mentioned whats really under the hood. according to what you post/drive, i and most others probably thought you had the 2.0 L that came in that car. if this is the case, be specific. if i was to continue guessing, i'd say you have put in the 16v motor, decided to run it on digifant. you must have some sort of fuel rail to fit electric injectors on that motor as well. did you hack in the digi wiring to the stock wiring? did you replace it all? i'd suspect there is no manual for what you've done and no real approach for diagnosing unless you know the car.

all this helps. it also makes you bill double or triple when the guy diagnosing has to put you puzzle together.

[gtx]

Re: Hall sensor tech

Well with the new relay, I have power at my hall sensor, but it seems my injectors and fuel pump are constantly on.

if your injectors are running constantly you spiked the control unit
due to bad ground connection..
take a pic of your motor and injection setup.
16v with digi gotta see it..