GT-X ignition problem

[Vipe]

Hi all!

I am new in astinagt forums and I have 323f and I am finishing my gt - gtx conversion.

I faced problem with ignition, there is no spark if I try straight from coil to earth. Coil gets 12volts and it drops to 10v when starting. I have changed coil, igniter and condenser from my old gt. They have all same numbers etc.

Other thing that Ive been thinking are those 2 plugs to my gt wiring. I have just put colour to colour like I read from manual. And there are many spare wires, maybe because gtx had a/c, abs, 4wd...

I changed everything like fuse box and knock sensor/ fuel relay thing. Even I cant get my pump working with info on this site. Have to use ign wire.

I tested all earth points with tester and all seems to be ok, so can anyone help with ignition?

[ROB-80E]

So you're using the full GTX engine loom and GTX ECU?

Ensure that you're getting power to both Dizzy and ECU when you turn the key to ign (reds). Dropping to 10v is ok, i'd expect that, if it gets any lower, think about giving the battery a charge.

Let me know how you go.

[Vipe]

I think you mean distributor with dizzy. Sorry my bad english

I have full gtx engine loom and gtx ecu and I use gtx fuse box with some gt plugs on its back.

What is power connector for ecu? Have to read manual again if it would be found from there.

Do you have any idea can I use gt distributor on gtx engine?
It looks very much like same but some small differences.

Now back to testing...

[Vipe]

I tested with ignition on, not starting. When red lamps light...
It does not give anything to my distributor like 12v, not to any of 4 wires.
And I tested bigger ecu wires in two bright yellow plugs in ecu. None of them gives something like 12 volts. This seems to be a problem then. All my fuses are good.

Just tell my what I do next?

Thanx in advance!!

[Ian]

as far as I knew, the GTX BPT doesent have a knock sensor?

As to the fuel pump, you have to take the wire out of one plug and put it into another if your using the stock GTX ECU. I cant remember which colour wire or what colour plug, it being late and all, but i will look tommrow... Running off your ignition switch is remotely dangerous, if you crash and theres a fire it will keep pumping fuel through, also theres a change in the voltage from lower RPM to higher RPM, running it off the ignition switch will just produce 12v constant power.

As far as finding it in the manual... Well not in the manuals that come with the cars, as far as I know (familia's and astinas) but there are some workshop manual links on this site if you dont mind a medium sized download, or if you can find a familia workshop manual (or TX3T if your an aussie, which im not too sure about... where do you hail from btw?)

did the engine start when you tested it before you baught it?

and have you tried putting a different battery in? Low voltage accross the board would surgest to me that your battery is dieing.

Well thats my two cents anyway. GL with your conversion.

[Vipe]

As usual I didn't test it.

I test engine before I put it on by turning engine and checked many other things. I hope it works. It was from halfcut where I ripped it off.

I know that I have to change thick green pink wire from gtx loom to black pink wire to gt loom, but it didn't just work for me. Maybe because ecu does not get any power..

I live in Finland, you know
I have all manuals what I found from here, some of the wiring diagrams are just little confusing to me.

[Ian]

have you tried changing the battery? Does the battery have enough charge to crank the engine? If so, I would imagine it would have enough to power the ECU / dizzy / fuel pump.... The fact that you have never seen the engine running is of some concern, how many km's has it done?

I suspect your ECU troubles are at the root of your problems. If the ECU is not getting sufficent power or isent working, that would probobly be why your getting no spark.

[Nate]

hi mate and welcome to the forums

check your timing belt. a mate and myself spent two days trying to work out why his car wasnt firing, and sure enough it was a busted timing belt

busted belt = cams not moving = dizzy not turning = no signal to the ecu etc

[Vipe]

Timing belt is good, I checked it, and ?rotor? inside distributor cap are moving when cranking. And battery is ok and has enough power to crank engine. Sound of starter is nothing like in those winter mornings in here. It sounds that battery is ok and has enough power.

This seems to be something with ecu. Does ecu power wire come straight to ecu or by some relays and fuses?

Halfcut was 130tkm driven. I bought it from 3riple-D.com or ophmotorsports.com, same thing I guess. Oils and everything were inside when I ripped it off. Spark plugs looked good etc....

Ian, Bpt GTX has a knock sensor. It is next to fuel pump relay thing.

[Ian]

oh? Well there you go. You learn something every day....

[Vipe]

Ok, I tested blue/red wire to ecu when ignition is on, it gets 12V!!
Is my ECU broken??! Or maybe bad earth points?!

[Vipe]

Btw, do I have to do something else than take battery off for a while, if there would have been failure codes in ecu? Or do failure codes stay there when I connect power back on? I haven't tested failure codes yet.

[Vipe]

oh, forgot to say, none of 4 wires in distributor gets 12v when ignition is on...

[Ian]

hold on, should the distributor be getting power while the engine isent cranking?

did you get any sort of warranty with the engine in lieu of seeing it run before you baught it?

[Vipe]

we didn't talk about any warranties...
I don't know, should it get any power?
There are just those sensor inside.

[Ian]

I honestly dont know. I would imagine that if the engine isent cranking it isent sparking and therefor the dizzy has no power.

have you checked the plugs?

[Vipe]

I tested with many spark plugs and spark wires...
That would help if you tell me should dizzy have power when cranking or when ignition on or both..

Or if you guys have gtx to gt loom connected, what wires should I connect to each other
in 2 plugs near ecu.

[Dogo]

also check the ballast resistor is in place and that the ignition control module is powered and grounded properly

or maybe its a dodgy ignition coil ?

[ongdennis]

before all testing being done.are the fuel pump working or not when u turn the ignition key to ON???

[Vipe]

Yes, if I connect fuel pump wire straight to ignition wire.