Help! Digifant wiring into Aircooled Vanagon??

[The_Zodiac_11030]

I recently acquired an inline 4 swap that came out of another Vanagon with a digifant 2 ECU (1.8l head on ABA block) I cannot for the life of me get this thing to fire!!

[82westyrabbit]

We need more information to help you. Pictures are always helpful as well. A few of us have a lot of Tiico experience. John

[ALIKA T3]

Spark, fuel, starter spinning?
What's going on precisely?

We don't have a crystal ball over here....
_________________
Silicone Steering Boots and 930 Cv boots for sale in the classifieds.
Syncro transmission upgrade parts in the Classifieds.
Subaru EJ22+UN1 5 speed transmission
http://www.thesamba.com/vw/forum/viewtopic.php?t=416343
Syncro http://www.thesamba.com/vw/forum/viewtopic.php?t=4...num+gadget

[The_Zodiac_11030]

[The_Zodiac_11030]

[crazyvwvanman]

More photos please, some with broader field of view.
Then specific questions about specific items in the photos.

Mark

[The_Zodiac_11030]

[The_Zodiac_11030]

[

quote="crazyvwvanman"]More photos please, some with broader field of view.
Then specific questions about specific items in the photos.

Mark[/quote]

[The_Zodiac_11030]

[Californio]

Two suggestions.

Using the Bentley, figure out which of the original wires go to what, and connect those. The alternator charging wires and AC wires should be the same, for example. The coil wires too, I think. That leaves you fewer wires to guess at.

Also, Foreign Auto Supply sells entirely new wiring harnesses and upgraded ECU's for the Tiico. If your Motronic ECU is an A version, you'll want to upgrade that anyway.
_________________
1987 Syncro Westy/2.0L Tiico

[Vanagon Nut]

Was the engine running in whatever vehicle it was in before you got it?

Turn ignition switch to ignition on position (i.e. dash lights on), measure voltage at the factory "15" positive wire that connects to coil. You should see ~ 12 volts.

From 'FAQ' here. You might find links to Tiico manuals:

https://www.thesamba.com/vw/forum/viewtopic.php?p=...ve#6236052

There is a Tiico group here:

https://groups.io/g/Tiico

Verify that cam-crank-distributor "timing" marks line up. If present, use TDC mark on flywheel not TDC mark on crank pulley.

Neil.
_________________
1981 Westy DIY 15º ABA
(VW Gas I4)

1988 Westy DIY 50º ABA

VE7TBN

[danfromsyr]

Here's a thread that has alot of the wiring details on it.
you really should neaten that wiring and connections up..
happiness is a trim wiring harness with good connections so you don't end up on the side of the road
https://www.thesamba.com/vw/forum/viewtopic.php?p=7187186



here's the Digifant-II (and Digifant-I) wiring color/pins
https://www.xjamiex.com/mk2resource/electrical/management/digifant2.html
all you need for an engine to run is
FUEL PRESURRE (normally the fuel relay is triggered on the Ground pin from the ECM signal wire)
Ignition +12v power. this is the van's black Key-IGN wire that goes to the coil. a wire from the ECM will also tap in to this wire.. often where it mates at the coil.
so +12v IGN goes to both the COIL & the ECM
Injectors ground via the ECM wire. the ECM uses the ground of the injectors to trigger them on.
the Injectors also need a +12V from the IGN circuit.. this should be fused.
DO NOT HOOK UP +12v to the ECM Injector wire as that's expecting to be grounding. you'll need a new ECM if you do.

that's it..
IGN+12v to the Coil/ECM/Injectors/Fuel pump/O2
-12v GND for the ECM/Sensors etc.

[The_Zodiac_11030]

[Californio]

Yes but if it's really a Tiico it has a Motorola ECU (only made in South Africa), not a Digifant.
_________________
1987 Syncro Westy/2.0L Tiico

[Vanagon Nut]

[The_Zodiac_11030]

[Vanagon Nut]

Thanks for the pics.

Cooling system etc. aside, as referenced already, there's nothing special required to make a non stock engine engine fire and idle in an air cooled Vanagon.


Neil.
_________________
1981 Westy DIY 15º ABA
(VW Gas I4)

1988 Westy DIY 50º ABA

VE7TBN

[ALIKA T3]

Dang bro, this is a rats nest in there.

I would strip that crap and start fresh. You still have the connectors for the aircooled dual fuel pump relay, bunch of wires useless in there.

The wires for the instrument cluster to engines are easy to figure out.

Then you must have some kind of TiiCo harness already done, poorly or well done.
You just need to identify ground and power to that. Trace the wires to the fuel pump, the ECU will have a relay for the fuel pump.

You gotta skim all the left over wires from the aircooled....
_________________
Silicone Steering Boots and 930 Cv boots for sale in the classifieds.
Syncro transmission upgrade parts in the Classifieds.
Subaru EJ22+UN1 5 speed transmission
http://www.thesamba.com/vw/forum/viewtopic.php?t=416343
Syncro http://www.thesamba.com/vw/forum/viewtopic.php?t=4...num+gadget

[82westyrabbit]

The fuel injection is definitely not Tiico. There is no point in looking for Tiico information. Neal is about as knowledgeable on ABA conversations as anyone. You definitely need the Bentley manuals for both the van and the fuel injection. There only about four wires the go from the van to the engine. Power to the coil. Alternator field wire. The oil pressure wire and the water temperature wire that is not in your van. The rest of the engine wiring needs to get custom made. From the pictures it looks like you are trying to reuse the engine harness from the air cooled engine. That probably won’t work. You need to start with the engine wiring harness from the car the engine came out of. If that’s not available to you there are ways around that. Good luck. We are here to help. John

[Vanagon Nut]