Ignition Module - Price Quote

[LokiRx7]

Hey, I dont even know if you guys can get ahold of one of these. And I tried searching around but didnt see any thing related,

1986 MR2

I need the Ignition Module, just the Black Igniter box on the coil. I am having difficulty starting the car when its hot, and it doesnt have spark when this occurs. Not that I thought it was the coil, but I had an aftermarket one laying around, so I switched out the coil. I would like to use an aftermarket igniter but I cant seem to find any write-ups or information as to what each of the individual wires are for. So I will just try a new OEM igniter if I can get one.

Otherwise I will have to settle for a Remanufactured one... And I dont always trust those...

[te51levin]

Check the pickups in the distributor as well. They can fail and cause a no-start too. I can still get an igniter if you need one:

89620-17020 - $396.76 - Igniter assy

Thanks!

[LokiRx7]

Originally Posted by te51levin

Check the pickups in the distributor as well. They can fail and cause a no-start too. I can still get an igniter if you need one:

89620-17020 - $396.76 - Igniter assy

Thanks!

Yeah, I already checked the distributor out via BGB specs. Man, that is pretty pricey. I was in a hurry and found a used one for a great price. I suppose Ill try to find an alternative, maybe a distributorless system is in my future.

I appreciate your time, and you may still hear from me. It never ever hurts to keep a few good spares around. And if cash frees up, I may get it anyway, God knows the next time I need one I wont have the money for it.

[te51levin]

No worries. They are awfully expensive. I kind of wonder whether a seven-pin GM HEI module could be made to work. The old-Corolla crowd uses four pin HEI modules in place of their four-pin igniters, so there may yet be hope.

[LokiRx7]

Originally Posted by te51levin

No worries. They are awfully expensive. I kind of wonder whether a seven-pin GM HEI module could be made to work. The old-Corolla crowd uses four pin HEI modules in place of their four-pin igniters, so there may yet be hope.

Thats exactly what I was thinking. I have a 1989 Corolla SR5, and it uses the coil/igniter under cap that all the Hondas use (NOTORIUOUSLY UNRELIABLE SETUP). Well my igniter went out, and of course you cant buy JUST the igniter, so I bought an entire remanufactered distributor...

Well the 'remanufactured' distributor has went out once since then, so I wired up a 4 pin GM igniter. The SR5 has a MUCH simpler ignition system, similair to my '81 Rx-7s ignition, and 7 owners cant find our igniters anymore. So a solution was the GM 4 pin igniter, cheap, reliable, DIRT cheap.

I also added a post for an external coil, and use an Accel coil. It runs great now, and havent had trouble with it. I have been wondering about the 7 pin igniter. BUT without a very detailed wiring diagram telling me what each wire does coming from the igniter, I can only make educated guesses, and I dont like guessing.

Actually.... I have the BGB and the Factory Wiring diagram booklet... I may take a look at it and see what I can do!

[te51levin]

If you succeed, you'll be a hero to MkI owners everywhere!

[LokiRx7]

Originally Posted by te51levin

If you succeed, you'll be a hero to MkI owners everywhere!

Looks pretty straightfoward, the GM 7 or 8 pin igniter will work. I am looking for a used one, or a junkyard that doesnt want an arm and a leg for one. They arent much, about $50 new, but I dont want to use a new one.

The only real question will be, will the Toyota ECU notice a difference? I dont think it will, but I cant say for certain yet.

Definately keep your eyes peeled for a write-up.

[LokiRx7]

Unfortunately there isnt any easy way to make this work.

Its nearly impossible to do without an IGF signal generator, and I cant find a write-up anymore, all the links are dead.

The Toyota Igniter receives an IGT signal from the ECU which tells it when to spark. Then the Igniter sends the IGF signal back to the ECU telling the ECU that the spark actually occured. Without this signal coming back to the ECU the ECU shuts down the injectors to prevent damage to the catalyst. So I could wire it in and get the car to start, but it wouldnt run for long.

There MIGHT, might be a tiny chance I can fool the ECU into getting an IGF signal, but the only way will involve a 4 pin igniter and keeping the factory igniter installed. But that may defeat the purpose because it is obvious my igniter is acting up when its hot, its acting up might be 'effing' with the IGF signal... Hence why I am getting a code 3.

So I dont know that there is any point to it... In the meantime my used Igniter has already went bad... And I am back where I started, it was fine for a few days....

EDIT ::

Well after attempting both modules, just as I expected neither worked properly. With my current skill set, I couldnt make this work with the factroy ECU. If we have any electrical geniuses on the board who might tackle this they might be able to make it work. But because of the nature of the signals the ECU requires I would need an aftermarket engine management system to make it wok right...