Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

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Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Fri Jan 23, 2015 7:48 am

Hey guys! I've always been interested in working on cars and I just bought a non-running AE86 with 4AGE 16v, HKS ITB and Haltech E6X. It hasn't ran in 8 years! I'm trying to get it running and tuned and then start on the body. The owner said that it needs a EDIS system (or the stock dizzy would work too albeit with less signal for the ECU). I'm wondering where to start.

I know for sure that the HKS ITB vacuum hose to ECU and to Brake vacuum aren't connected it up. There's no hose from the vacuum to ECU. In fact, the E6X and leading wire harness are not installed on the car and came in a separate box.

Goal 1: Get it idling

I want to verify that the HKS ITBs are installed properly with correct connections, and get an EDIS system in. I don't know what to look for in terms of fuel line or injectors. I've read that EDIS systems have a limp mode that'll work without the ECU. Would the limp mode work with the HKS if the fuel lines are hooked up properly? If I can get this working, at least I can tell if the engine is working properly and fuel line works.

Are there any manuals on setting up HKS ITBs so I can walk through the steps, or can you guys show me how you connected it up? Any of you worked on EDIS systems before? Or would you recommend starting with the distributor setup first?

I'm going to do an oil change / oil filter, change spark plugs, and oil the engine / crank manually before I start any of this. Is there anything else I should do before starting it up again?

Goal 2: Hook up the ECU

The car came with leading wire harness and cut connector plugs from the original harness. I'm guessing I'll have to look at how the original wiring looks like and try to match it up with the new harness / plugs. Any thoughts here?

Thank you for your time! I'm really excited!

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Fri Jan 23, 2015 2:03 pm

Welcome to club4AG :)

Have to say you sure are jumping in at the deep end on this one !!!
But if you can get the engine running you will have definitely demonstrated
better skills and greater perseverence that the previous owner :D

I would suggest this...
1. Forget the EDIS idea, and find a factory distributor. The Haltech should
be able to run with the distributor triggers no problem, and it will simplify
setting up the timing.
2. Download the Haltech manual and read it cover to cover... several times !!
3. Make yourself a wiring disgram with all the engine sensors listed, and
match this to the Haltech wiring harness.
4. Check if the ITB's have a TPS connected.
5. Check if the ITB's use injectors in the head or in the ITB body. If they
are in the head, have you got the fuel rail and FPR ? If they are in the ITB
have you got the fuel rail and brackets, injectors etc ?

I'm not familiar with the HKS ITB setup, so a pic would help :)

Cheers... jondee86
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persists in trying to adapt the world to himself. Therefore, all progress
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby yoshimitsuspeed » Fri Jan 23, 2015 2:44 pm

I have never heard of or seen HKS ITBs so I'm guessing these are pretty rare. I am sure any documentation on them will be the same. You could check with HKS to see if they have any documentation hidden in the vault but I wouldn't hold my breath.
With that said the operation is pretty simple. You will need to figure out what vacuum systems you are using, what needs to be routed to vacuum like evap, brake booster etc and what is supposed to route before the TB like the PCV and figure out what you are going to do about it.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Fri Jan 23, 2015 7:43 pm

Oh my goodness! Thanks for helping me guys.

I do see the distributor and wires from it to the spark plugs. I think it's the original (picture 3)

I'm not sure where the injectors should be on the ITBs. The previous owner included some injectors in a separate box. I'll try to find where they should go to. I see some screw holes on the engine block that seems like something should go there.

The previous owner said it should go to the brake vacuum or something like that? There is a cut hose from the vacuum box to a round cylinder. (8th picture)

Here are some pictures:

https://drive.google.com/folderview?id= ... sp=sharing

EDIT:
I've added some components that were in the trunk pictures 10+

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Fri Jan 23, 2015 9:24 pm

Guys! I found an E6X wiring diagram on the haltech website. It's great that Haltech provides information for their previous ECUs. It's funny that the programs for it are for DOS. Man, that's going to be interesting when I'm actually tuning.

http://www.haltech.com/wp-content/uploa ... iagram.pdf

It's hard to trace down all the wires, but I found the fuse box and am starting to label everything from that onwards. Any tips with reading these things and tracing the wires?

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Fri Jan 23, 2015 9:48 pm

Highly recommend that you take your time on sorting this stuff out.
You have got most (if not all) of the original fittings that were pulled off
the engine for the HKS install. These need to be put aside as you will not
be using them e.g. TVIS plate, RWD manifold etc. Looking at the pics it
seems that you have near enough everything that you need to complete
the install.

The engine has the injectors installed in the head from the factory. Those
are the four holes with thin black collars inside. Above them are three
threaded holes that hold the fuel rail... and I see the rail in one of the bags.
However, the ITB's have provision for installing injectors as well. So you
will need to root thru the bags to check out what injectors you have, and
where they are going to be installed.

Really cool old skool throttle bodies though, and they do have a TPS on
the end, so no problem there. Vacuum box is good, distributor is good.
All you have to do is connect the dots :D

Cheers... jondee86
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persists in trying to adapt the world to himself. Therefore, all progress
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Fri Jan 23, 2015 10:24 pm

Thanks for the encouragement and very helpful information! I really appreciate it.

Should I plug up those injector holes on the head so dust / dirt don't get in? I'm also unsure where the ITB injector holes are. Should I follow the vacuum box hoses?
I also see 4 plugs (black with blue thread) in picture 14. I'm guessing those are the injectors? How do I determine if they're the correct ones for this build? Does it matter how big the size is, or does the ECU know how big they are and adjust fuel amount?

Thanks! I think the ITBs are pretty awesome too! After I get everything running, I'm going to clean all of it, and probably get new velocity stacks since the last one is cracked a little. :)

I'm currently labeling the Haltech wiring harness. The sheer amount of wiring was really intimidating at first, however I think I'm getting the hang of looking at the diagram and figuring things out! Slowly I'm getting more comfortable about the wires.

This is pretty awesome. I've always wanted to work on cars!

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Fri Jan 23, 2015 11:50 pm

Injectors go in the top of the throttle bodies. In this pic
the holes for the injectors are blocked off with allen head
plugs.

Image

The small threaded holes either side of the plugs are for the
brackets that hold the fuel rail, which in turn holds the injectors
in place. On your pics I think that there is a brown lip showing
around the injector opening, so maybe they are plugged also ?

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 24, 2015 12:40 am

Oh I see it!
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

Probably around 80% done with labeling wiring harness. There are some wires that don't match the diagram. I'll have to use a volt meter or something to see which one is connected to which pin.
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

I also have some unplugged hardware in the engine bay that I'm not sure what it is:
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

Not sure what this plug is, it comes from the wiring harness from the right side of engine bay
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

Also this blue one:
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

EDIT: weird, the pictures stopped working with the img tags. Linked them instead.
Last edited by aceforever on Sat Jan 24, 2015 7:16 am, edited 1 time in total.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sat Jan 24, 2015 1:03 am

Yes, the injector holes on your ITB's are plugged, so you will be
installing the injectors in the head. Basically you need to round
up these bits...

Image

The black bits held to the rail by zip ties are the standoff spacers
that go between the head and the fuel rail. Hopefully, the injectors
you have will be the same dimensions as the OEM injectors.

In the second pic, that's your wiper motor... usually gets hooked up
to the under dash harness, but in your case ?

Next pic does not look like an OEM plug. I would say it is for some
kind of aftermarket instrumentation. Got any fancy gauges inside ?

Don't know the blue plug. A yellow version of that is usual for the
diagnostic test plug on the OEM harness. Maybe someone else can
identify that one.

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 24, 2015 9:38 am

I've managed to test fit the injector rail and the injectors. The injectors don't go into the head (into the black collars), but rest in the silver groove area. That's how they fit right? The opposite end lines up the rails and I think I need to use some force to push them actually into the rails because of the O-ring there.
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

I'm not sure what connects to the holes on top of the rails are, I'm guessing the fuel line? I don't know where to look for that, I'm guessing near the firewall? I noticed in your picture there's something on the top left, and a drum thing on the right of the rail.

The standoff spacers did not come with the car, where could I find those?
Am I missing any other pieces here?

EDIT: Sorry, I missed answering one of your questions, the non-OEM plug seems to be from VW/Audi and comes from underneath the car. I don't see any gauges, everything looks pretty stock inside other than the quick release steering wheel. https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sat Jan 24, 2015 1:58 pm

On the nose of the OEM injectors you will see a fat black rubber washer.
That is the "nose insulator" and serves the dual purpose of holding the
injector steady by locating in the silver recess, and insulating it from
vibration/heat transfer from the head.

The O-ring on the other end has to seal against 45psi pressure, so it is
a snug fit. You ease them in to the rail by lubing the O-ring with a bit
of gasoline or CRC type spray. The spacers are essential for holding the
fuel rail the correct distance from the head. Best bet would be to try the
junkyard, as they will be the same on any 16V 4AGE engine.

On top of the rail there are holes for the fuel hose banjo bolt at one
end, and one smooth hole and two threaded holes at the other end for
mounting the fuel pressure regulator. There will also be a hole (no longer
needed) for the cold start injector hose that was at OEM fitting. Once
again, if these parts are missing, the junkyard will be your best bet.
And when you grab the banjo bolt, make sure you grab the two copper
washers at the same time :)

The fuel line from the tank comes from under the car and terminates
at the fuel filter, usually bolted to the inner fender on the passenger side.
From there a flexi hose to the banjo bolt on the fuel rail. You may need
to search out a slightly longer one, as the stock one might not be quite
long enough to reach all the way round the ITB manifold.

The big black plug in your second pic is the connector for an aftermarket
wide band O2 sensor. I would expect there to be an extra 2" dia round
gauge installed somewhere in the cabin... and a sensor in the exhaust
pipe under the floor.

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 24, 2015 4:33 pm

Thanks for explaining the injectors! I'll get some CRC spray and push them in. Is there any significance to the different wire colorings on the injectors?

I found these inside the center armrest storage compartment: https://drive.google.com/file/d/0B6j4n6 ... sp=sharing
The three red rubber things seem like they could be the spacers for the rail, however I feel like the washers is missing. No clue what the the spring and gigantic screws are, nor the black thing.

I think I found the fuel line: https://drive.google.com/file/d/0B6j4n6 ... sp=sharing
What an interesting connector. Is this there to help secure against the pressure?

I also found a screw, is this the banjo screw for the fuel? https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

Maybe the fuel pressure regulator is in the engine bay somewhere since from some pictures they seem to be connected to hoses. I'll check that.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jdm86gtz » Sat Jan 24, 2015 4:42 pm

aceforever wrote:The three red rubber things seem like they could be the spacers for the rail, however I feel like the washers is missing. No clue what the the spring and gigantic screws are, nor the black thing.


The bolts could be for a strut brace or for suspension RCAs, the red rubbers look to be the end seals from TRD plug leads, the spring is probably from the handbrake for the self locking mechanism and no idea on the black thing but it could be a broken oil pressure switch.
The banjo doesn't look like the normal fuel banjos and the AE86 uses a pulsation type damper anyway like this one but without the plastic cap
http://www.gtfours.co.uk/how_to/fuel_ra ... damper.jpg

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 24, 2015 5:00 pm

I found the fuel pressure regulator!!! It was hiding underneath the ITBs. https://drive.google.com/file/d/0B6j4n6 ... sp=sharing
I also found the screws that went along with it in the trunk. Where does that output for a hose go to?

Thanks for helping out jdm86gtz! You think I can still use this banjo over the OEM ones?

I think the only thing I need is rail spacers and a longer fuel hose to the rails then?

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sat Jan 24, 2015 5:34 pm

aceforever wrote:Where does that output for a hose go to?

That hose is the return to the fuel tank. FPR fits to the rail with
an O-ring, so same assembly detail as for the injectors.

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sat Jan 24, 2015 5:48 pm

aceforever wrote:I found these inside the center armrest storage compartment...

None of that looks like OEM... put it in your junk pile for now.

I also found a screw, is this the banjo screw for the fuel?

If the thread fits the rail, and the bolt goes thru the banjo fitting on
the hose, you can use it. As said above, there is usually a pulsation
damper fitted, but it is not used on every 4AGE, and the engine will
run fine without one.

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 24, 2015 9:20 pm

Thanks for identifying all these random parts. I'm so glad to have you guys.

I'll use this banjo nut for now. I can always get a pulsation damper later.

Not sure if local salvage yards have 4age fuel rail spacers around here, need to call a bunch of them up. I'm talking to a bunch of people on craigslist. Last resort, I tracked down the part number and found a source: http://www.toyotapartszone.com/oem/toyo ... 08009.html Shipping is quite expensive at 18$ for such a small part.

I'm wondering how I can source a longer fuel hose with banjo nuts? Would I have to make it custom out of hoses?

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sun Jan 25, 2015 4:50 pm

A buddy of mine came over and tested the radiator with a pressure tool. Seems like the radiator hose or radiator is leaking a bit, need to get a new radiator and hoses. He suggested to change the thermostat as well since I'm in there.

I'm also looking up what oils to use for full flush, seems like 10w30, and a 4AG oil filter would work. Trans fluid 75w-90 GL4+. Rear axle oil 80w-90 GL5. Spark plugs, I need .044.

Do I need to flush the brake fluid?

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sun Jan 25, 2015 4:51 pm

aceforever wrote:Not sure if local salvage yards have 4age fuel rail spacers around here ?

Best bet is to actually go to a junkyard, find any old Toyota with
a 4AGE under the hood, and pull the spacers yourself. It would be
quicker than finding a junkyard guy who would know what you are
talking about :D

how I can source a longer fuel hose with banjo nuts?

I found one off a FWD Corona... or perhaps it was a Celica ?? Have
a look around the old Toyotas while you are at the junkyard... maybe
take the hose you have as a guide. Have you checked to make sure
that one doen't fit ?

Cheers... jondee86
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sun Jan 25, 2015 6:45 pm

Hrmm okay, I should make a list and head to a junk yard. I need a new radiator too.

The one I have is 2ft, I need one at least twice that length to clear the ITBs.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sun Jan 25, 2015 7:00 pm

You said I could use the distributor and not use EDIS. I'm not sure how the wiring should work there. There's options for Int. Reluctor (EDIS sensor is this I've read) or Hall effect (not sure if this is for distributor?)

EDIT. nvm! Apparently I don't need to wire the trigger sensors. There's an option to lock timing.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Mon Jan 26, 2015 2:22 pm

aceforever wrote:You said I could use the distributor and not use EDIS.

I shall elaborate. The EDIS system was widely used on various Ford vehicles in
4, 6 and 8 cylinder versions. It used a sensor reading a toothed wheel on the
crankshaft, to control a wasted spark coil pack. No distributor was required, so
if you like, it was an alternative to the distributor ignition syatem.

You are going to be using a Haltech ECU which is capable of controlling both
fuel and ignition i.e. it is a user programmable ECU that will replace the OEM
non-user programmable item. According to the documentation, the Haltech
should be capable of reading the OEM distributor triggers, and providing an
output to the igniter. However, there are reports of some people having
problems getting the Haltech to read the OEM triggers, and this has lead to
vague suggestions that an EDIS system must be used.

Image

I suspect that the people who had problems failed to come to grips with the
simple modifications that are required to use the OEM triggers with the
Haltech ECU. The wisdom of the interwebs makes it reasonably clear, that if
you have a distributor with a 24-tooth trigger wheel and a 4-tooth trigger
wheel, you need to remove (grind off) three of the teeth on the 4-tooth
wheel. Then, if the trigger wheel sensors are correctly wired, and the ECU
programmed with the correct data, the system will work.

DISCLAIMER: I know nothing about Haltech ECU's and have never done the
modification outlined above. I have wired a 24+1 GZE CAS into my own ECU
and it worked just fine with the correct data setup in the ECU software. The
sensors in the base of the smallport distributor are the same as in the CAS.

So I am of the opinion that you don't need the EDIS system. It is an extra
layer of complexity that you shouldn't need at this stage when your prime
objective is just to get the car to run.

Cheers... jondee86

PS: Have you tried turning the engine over by hand... socket on the
crank pulley bolt ?
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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Tue Jan 27, 2015 9:24 am

I'm a bit hesitant to modify the distributor gear since I don't know the internal workings of one, other than it spins and hits the contacts on the cap.
I guess I should read up on what those two gears do in the picture and the other pieces there.

I think EDIS or some other DLI is something I definitely want to do in the future since the distributor method would not allow the ECU to control spark timings right?

---

I have not turned the engine over by hand. Is that for checking if the engine crankshaft rotates and operates the distributor?

I just bought a 201-piece mechanics tool set and am waiting for that. I also bought fluids and oil filter. I was told that I should do an oil change first and grease up the cylinders with WD-40 and some grease thing? and oil the camshafts before trying to start the engine.

Meanwhile I'm looking at where all the sensors are on the car so I can wire up the ECU harness.

I got a hydraulic jack and jack stands yesterday and decided to check where that mystery VW/Audi plug goes to and it looks like it's connected to a sensor where the exhaust header joins together, before the Cat. I'm guessing that's the O2 sensor I need to hook up to the ECU? The ECU only has 3 wires whereas the plug has 6. I guess some of it isn't needed since you mentioned it was a wideband sensor.

I also don't know where the MAP sensor is. Since this is an aftermarket intake, where could it be?

Where does the air temp sensor go? Into one of the injector holes in the ITB?

I read on the internet that the the coolant temp sensor is behind the block I think I see where it is. I know where the TPS is. Not sure where Road speed sensor is.

Sorry for all these questions. I'll search more after work.

Thanks for helping out!

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Tue Jan 27, 2015 3:02 pm

aceforever wrote:I got a hydraulic jack and jack stands yesterday and decided to check where
that mystery VW/Audi plug goes to and it looks like it's connected to a sensor
where the exhaust header joins together, before the Cat. I'm guessing that's
the O2 sensor I need to hook up to the ECU? The ECU only has 3 wires whereas
the plug has 6. I guess some of it isn't needed since you mentioned it was a
wideband sensor.

In your pic...https://drive.google.com/file/d/0B6j4n6SMbrDoYnNaSkVSdmV5ZXM/view?usp=sharing

The plug on the RH side of the pic belongs to a Bosch LSU type WBO2 sensor.
These are widely used by auto makers and aftermarket WBO2 systems. The plug
on the LH side of the pic belongs to whatever device the sensor was reporting to.
Could simply be an AFR display gauge, or it could be a controller capable of giving
O2 information to the ECU. There are many aftermarket options, and the pic
below shows how one of these is wired.

Image

You will need to follow the wires to find out where they go, and what is or was
connected to them. There should be at least a 12V key switched power supply
for the heater, and probably a heater ground plus a controller ground. The ECU
would normally receive a simulated narrow band output from the WBO2 controller.
It appears that the E6X is designed to run with a narrow band sensor, so any
WBO2 controller should be able to give it a suitable signal. Most likely it would
also drive a wide band display for tuning/monitoring performance.

Cheers... jondee86
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Tue Jan 27, 2015 3:50 pm

aceforever wrote:I'm a bit hesitant to modify the distributor gear since I don't know the internal
workings of one, other than it spins and hits the contacts on the cap. I guess
I should read up on what those two gears do in the picture and the other pieces
there.

I think EDIS or some other DLI is something I definitely want to do in the future
since the distributor method would not allow the ECU to control spark timings right?

Within the E6X manual there is a special mention of setting up the ECU to work
with the Toyota 24+1 distributor. This is the trigger wheel arrangement in the
distributor on later model 4AGE engines. If you have an earlier distributor with
24+4 trigger wheels, you need to modify the 4-tooth wheel. However, you first
need to look inside your distributor and see exactly what you have in there :)

The distributor performs the dual tasks of providing the ECU with crank angle
information, and distributing the high tension spark. The spark timing is deter-
mined by the ECU. This is the same with the E6X as it is with the OEM distributor.

The E6X almost certainly will have the ability to run wasted spark ignition, so
there is really no need to contemplate using EDIS unless for some reason it proves
to be impossible to get the distributor setup to work satisfactorily.

Cheers... jondee86
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Tue Jan 27, 2015 10:40 pm

Thanks for solving the O2 sensor mystery! I'll just have to search for a compatible WBO2 controller.

I unscrewed the distributor cap and it looks like a 4+1?
https://drive.google.com/file/d/0B6j4n6 ... sp=sharing

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby aceforever » Sat Jan 31, 2015 5:33 pm

I've used a multimeter and it seems like the wires red and white has a circuit and black and green has a circuit. Is this normal?

EDIT:

Seems like from this picture:
Image
It looks like white and red are one green plug, and green and black another. Does that mean when the gears hit the sensors/switches on the side of the distributor walls, they stop the circuit?

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby jondee86 » Sat Jan 31, 2015 9:26 pm

Digging into this as it is a bit interesting :) And it does lend some
credible weight to the alleged problem with Toyota distributors !!

Here is a starter for your reading...
HALTECH basic info for setting up 4AG's

And another one touching on DIY reluctor signal converters...
Ignition Setup pros - advice on 4age haltech install

Cheers... jondee86
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore, all progress
depends on the unreasonable man.

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Re: Restoring AE86 w/ 4AGE 16v + HKS ITB + Haltech E6X

Postby yoshimitsuspeed » Sat Jan 31, 2015 9:30 pm

aceforever wrote:I've used a multimeter and it seems like the wires red and white has a circuit and black and green has a circuit. Is this normal?

EDIT:

Seems like from this picture:
Image
It looks like white and red are one green plug, and green and black another. Does that mean when the gears hit the sensors/switches on the side of the distributor walls, they stop the circuit?


I believe the way these work is the ECU supplies a voltage to one wire and monitors the other. I believe the trigger passing the sensor causes a change in voltage and the ECU uses this spike to tell where the dizzy is.
Maybe that link jondee posted has more details.

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