I am doing an engine and tranny swap (also swapping computers) with an 86 22re 2.4 4runner manual that was wrecked, but the engine and tranny are good and an 89 22re 2.4 4runner automatic that has a good solid body. After removing everything from both vehicles and cleaning up and replacing parts I have run into an oxygen sensor problem!
86 engine has a 1 wire oxygen sensor on the exhaust manifold
the 89 had a 4 wire oxygen sensor on the exhaust under the drivers side.
Can I use 89 oxygen sensor on the exhaust since the hook up is there or do I need to rewrite the whole thing to do the single wire from the exhaust manifold?! Does it make that big of a difference?

 

use the components of the motor you are using. if you are swapping in that 89 engine with the 4 wire HO2 sensor use that. Use all the components that are for that engine and computer.