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[Teranfirbt]

Rock Auto lists an ignition module for the 85, Standard Motor LX662. Realistically any of the VAST type Toyota ignition modules should work, but it'll probably take a little figuring out on the wiring.
The Megasquirt manual has some good documentation on VAST: http://www.megamanual.com/ms2/vast.htm

[celica842]

Thank you for that link.. Quick question could it be the the hall switch in the distributor even though she starts and idles? Before I get an 85 module I'm going to go to Napa and then dealer.. I have several good part numbers just trying to locate one.. Push come to shove ill use the 85 and try and make it work

[celica842]

Ok I did get a hold of a used one for 40 bucks so just waiting for it to show up.. But I did drive it today to a local shop for the pinion seal so even though she was running like crap it still felt so good to drive it. So I hope this solves it (can't think of what else it could be) at the very least buys me time to find a new one. Did get the new tires today.. So things are looking up..

[celica842]

 Ok got the new igniter in thought I'd solve the headlight problem solved first  thinking they were related maybe wires rubbing together or something.. Wasn't the case.. Got the new igniter installed and 0 change in how it runs. Raises new questions am I wrong in the timing needing to move when you rev it up? Am I chasing the wrong thing? Or also tried another injector resistor pack I had laying around thinking that was cause it. So I'm stumped lol any other ideas? I have tried with tps unplugged and still no change. Again any help would be appreciated.

[ozzie]

If the timing needle isn't moving when you rev it, you have no advance. If this is an '85, there should be a jumper that disables timing advance, check that it isn't jumped. If it's not jumped, you have an issue with the igniter, the wiring between it and the ECU, or the ECU itself.

[Teranfirbt]

What year is the car? What year is the ECU from? Does the ECU have 2 or 3 plugs? If you have a early ECU with the later distributor, you'll get the problem you're having.

[celica842]

Ok the title says 1984 she was built in July of 84. I've owned the car since 2003. Have never changed anything the computer looks for sensors igniter afm distributor etc.etc. i was driving he car up till 2012 when the motor blew. Got a new block and head ever thing else was off of the 84. The distributor is off the 84 although the 85 looks identical. The vin is jt2ra64l6e0053717. The computer is a two plug part number 89561-14172 and I agree the info I find some says maybe this computer won't control spark but she did before the motor blew up. https://drive.google.com/file/d/1kimWXKKhvAKxaBrVozejMVZuTNpOMocG/view?usp=sharing

I read this article and am still sifting through it but..
I did try a new afm from oreillys. She ran the same. Hoping tomorrow brings more ideas. Now that I have the computer out I found a 84 pin out on here i want to make sure the ground is good here at the computer. What ever it is probably so stupidly simple but I just can't see it in front of my face.

[Teranfirbt]

That's definitely an ecu that doesn't control ignition, you need the early vacuum advance distributor and ignitor to make that work.

[celica842]

Ok I understand but this computer distributor and igniter were on the car when the motor blew up.. The replacement igniter is the same part number.. I guess I'm not understanding why it worked before.

[danf]

I'm a little confused. You have an '84 car, with an '84 ECU?

And you swapped an '85 engine and distributor in? Or did you swap the '84 distributor to the '85 engine?

There are engine differences between ??-1984 and 1985+ 22re engines. The block and head are different dimensions. So if you try to use a 1984 distributor in an 85 engine, the distributor will not seat correctly (as the head is shorter) and your timing will be waaaay off.

I know someone that went through this during a swap and it took days to figure out why it ran like crap. We figured out quickly that the timing was super screwed up but couldn't figure out why...

[celica842]

Ok I wish I could upload pictures but yes the original 84 motor the distributor did not have vacuum advance.. I understand that Maybe it should have been. When I got this 85 motor I took to the machine shop I put all the parts to it in a box.. When the swap came only the 84 parts went on or were replaced shopping for 84 parts. I am currently sitting on two distributors that look identical.. I bought another igniter for 84 and it matches my old one exactly.. My question is I didn't have vacuum advance before from 2003-2012 when the motor blew up and back then she would rev all the way to 7k with out any issues.. The current issue is she is struggling to hit 2k. I put the timing light on the crank and the timing isn't moving.. I did put a comp cam in it on on thier website said not for fuel injection but the specs matched what we took out.. Will this idle 180 out? Fires up fine idle all day long.  No misses no vacuum leaks. I guess I don't mind buying a new distributor with vacuum but trying to understand why she ran so long with out it.

[celica842]

 Ok was horsing around and I was letting it idle while I typed that last post.. And goosed it and she went to 4k like nothing.. One question in sure my neighbors would love to say yes too but right now I have the factory exhaust manifold that stops right before the cat that is where it ends if I don't have enough back pressure what would the symptoms be?

[celica842]

Ok got 0 codes well 1 flash saying everything is normal. She'll hit 5k rpm now if I ease into it goose'n it 4k 4.5k sometimes but revs right up.. But why what changed? I had the computer on my desk over night.. I'm sure once the rest of the exhaust gets installed shell change.. But up to 5k with the timing light on the crank timing never moved.. But I think I'm ok with that for now.. I think.the old 84 motor I never checked didn't have to once I saw those holes.. Huh weird the fuel dampner is leaking after I shut it off but that's an easy fix I think.. So she's running well enough to take to the exhaust shop at least.

[celica842]

Were the two distributors 85 and 84 different lengths? Was wondering if I should go head a get a vacuum dizy. Or leave it alone she's running like she used to.. Or could I be causing damage with the open exhaust I couldn't really hear any spark knock..

I'm a little confused. You have an '84 car, with an '84 ECU?

And you swapped an '85 engine and distributor in? Or did you swap the '84 distributor to the '85 engine?

There are engine differences between ??-1984 and 1985+ 22re engines. The block and head are different dimensions. So if you try to use a 1984 distributor in an 85 engine, the distributor will not seat correctly (as the head is shorter) and your timing will be waaaay off.

I know someone that went through this during a swap and it took days to figure out why it ran like crap. We figured out quickly that the timing was super screwed up but couldn't figure out why...

[danf]

How many plugs does your ECU have on the car? 2 plugs = you need a vacuum advance distributor. 3 plugs = 85 style TCCS with timing control.

One of the things that's absent on the 84 cars is a knock sensor which influences timing.