(pulling My Hair Out)

Hi, my kid pick up a 92 talon with a 140.000 on it, everything ran great tell the main brain went out; I replaced it and some other censors. Now the car is smoking I know very little about this car could someone help point me in the right direction Thanks (PULLING MY HAIR OUT)

What color smoke is it?
We need to know more about the car, is it turbo?

I would do a compression test and see how that turns out then narrow it down from there.

Could be as easy as a headgasket or turbo, or it may be the rings.

This is a 92 talon non tubro, the smoke is blueish in color, I need to ad this car did not smoke at all before the brain went out. it is a auto trans

Blue smoke is oil burning. Shouldn't anything to do with the ECU being replaced. I would recommend a compression test. If everything checks out there then I would look more into the head. Maybe valve stem seals.

Or rings. A leakdown test can determine which.

Where did you get the ECU? If it didn't do it before you put in a new ECU, you may have the wrong one for the car, causing it to smoke. Although I don't know why it would make blue smoke, but that's my only logical thinking right now.

is it a lot of smoke, or just a little?