Junkyard ignition module for 7AFE, Looking for help determining part number equivalents Options

[Langing]

Hello my old friends!

I have finally got my 1994 ST 7AFE engine put back together and back into the engine bay. It started back up without much trouble, but the second start was very rough, one cylinder seemed not to be getting spark, then no more sounds of cylinders firing at all.

Proved that I had 4 spark plugs sparking, had good compression, fuel and air. Just no firing. As I was checking to prove the timing belt had not broken or stretched or skipped a gear, a miracle happened. When going to put the valve cover back on and went to apply seal packing to the places pointed to in the FSM, it became obvious that the two bolts holding the cap for the o-ring of the distributor shaft were loose!!

Turned out that that step simply is not written into the FSM, and I only did what the manual said to do. No torque down of those two bolts specified, I didn’t torque them down. The loose bolts lead to an oil leak around the distributor outlet from the cylinder head, which I tried to fix by stupidly wrapping teflon tape as “extra protection” against oil loss, not stopping to ask myself why the leak when the o-ring should have done that job. Guess it was the excitement of hearing her run, after more than two years being nothing more than parts.

From the evidence, I finally realized that what must have happened was that when I revved the engine with the hold-down of the distributor shaft only loosly held, it must have damaged the crank-angle sensor (inside the module) and improper signalling from the sensor would make the ECM unable to correctly know when to give a signal to fire the next spark plug. I still believe that is what happened.

All that said, here is my problem. I went to a nearby LKQ and got an ignition module from a 1994 Corolla (don’t know the model specifics, only that it was a 7AFE engine.) Today, I realized that the ignition module for my ST is Toyota part number: 19020-16280, while the module I took from the Corolla of the same year has a Toyota part number: 19020-18250. The question then becomes “are these two parts interchangeable”? I do not want to put a module in that could blow the transistor inputs at the ECM.

The modules look identical. They both have two connectors, one with two wires, the second having 6 wires. If you do not know the answer, do you know what I could do, or where could I go to determine if they are equivalent parts? I need to know asap because I just know she is going to run when she has a good ignition module, I only had to pay $30 for the junkyard distributor, and I am determined to get her running NOW!

Sure hope people still use this site, even though I can no longer find 6th gen Celicas in the junkyards.