Sensor de oxigênio

Hello everyone, I am new here, I have a Hyundai Accent 2000, supposedly ... 1.5,
a few days ago, I had to change the escape manifold and not the mechanic did not find the same type of engine, I found only one without Catalitical, and put that one, but, it throws me codes of llos of oxygen sensors, in addition the car does not pass the 3000 rpm because it is stopped and the engine is scratched ... The strange thing is also that the A alimentação dos sensores de oxigênio é de 12 volts, mas quando medro a alimentação, ele me envia uma tensão super alta de 22 volts ... (não foi assim antes) Eu não sei se teria danificado o computador ..., não sei se alguém poderia obter o manual e o workshop do sotaque de Hyndai 2000. Muito obrigado com antecedência.

Hello, the Landa probe has 4 white cables 1 Black 1 gray The probe is not feed on current is a current generator depending on the oxygen inside the exhaust tube but it has a 12V aliementation for the heating resistance that has connected in the two white cables since the others are signal The probe is not well connected, the one that gives it importance the ECU is the first the other after the catalyst is to know if the same catalyst is working well, something else the medida de tensão