Engine swap 1.6L 4A-FE to 1.8L 7A-FE, Anyone done it? Options

[Bikeman982]

I have swapped engines and transmissions and am running into some questions for someone that has done it. Please let me know if you have.

[Bitter]

http://www.corolland.com/forums/index.php?...30&#entry131312

bike, based on that i dont think the 4afe pcm will contol the a245e trans at all. it'll goto its defaults if not plugged in, which is to sit in 4th gear with a unlocked torque converter. it'll move but you have to floor the pedal and wait about 20 miles to get to 10mph.

[Bikeman982]

http://www.corolland.com/forums/index.php?...30&#entry131312

bike, based on that i dont think the 4afe pcm will contol the a245e trans at all. it'll goto its defaults if not plugged in, which is to sit in 4th gear with a unlocked torque converter. it'll move but you have to floor the pedal and wait about 20 miles to get to 10mph.

Which leads me back to why I need to get the 7A-FE ECM wired in. It would seem compatible with the engine and transmission, but needs whatever the wiring (and connector) is inside the body of the car.

[Kwanza26]

Which leads me back to why I need to get the 7A-FE ECM wired in. It would seem compatible with the engine and transmission, but needs whatever the wiring (and connector) is inside the body of the car.

But what's wrong with your 4AFE tranny? If there's nothing wrong with it... there is no problem. The 4AF trans does fit on the 7AFE if you swap flexplates. It's not all that complicated... and I think that's where your fitment issues are. The whole ordeal of messing with wiring isn't worth something mechanical.

[Bikeman982]

Which leads me back to why I need to get the 7A-FE ECM wired in. It would seem compatible with the engine and transmission, but needs whatever the wiring (and connector) is inside the body of the car.

But what's wrong with your 4AFE tranny? If there's nothing wrong with it... there is no problem. The 4AF trans does fit on the 7AFE if you swap flexplates. It's not all that complicated... and I think that's where your fitment issues are. The whole ordeal of messing with wiring isn't worth something mechanical.

I tried using the old transmission (from the 1.6L 4A-FE engine) and it did not fit. The problem was too much gap between engine and tranny so the bolts did not connect. The torque converter seemed to be too thick, but they were the same for both tranny's. There was no flex plate difference - that I could tell.
The transmissions are different and have different housings and transaxles. Definitely not a match for me, so I changed it to a newer tranny. Now engine and tranny match up and are installed in the car (I did change the mount that held the tranny to the body - (new part from AutoZone).
The problem now is the car's wiring is different and the connector does not plug into the ECM.
The wiring harness has been changed and seems to be suitable (no connection for crankshaft position sensor, but I won't use it?).
I did not want to change to manual transmission because I am not prepared to do all the modifications required.
I thought a straight swap from automatic to automatic would be easier than automatic to standard.
I did not realize that there was such a big difference between electrical systems on the 1994 and 1995.
I thought they were the same with the exception of individual car options (that may still be the case - I am seeking answers to the differences).