Check Engine

Hello everyone I have a problem, I see the check Engine in the Astra GSI 2.4 16V (exhaust emission system)
has 2 oxygen sensors in the escape forward of the catalyst and another after it but it does not have it to the catalyst in place a
pipe
. lack of catalyst? How can I do not the failure come out?
Thank you

Hi Tocayo. Look, what you did taking out the catalyst is an important problem, since those sensors that it has are the famous lampas zondas, which sensit the exhaust gases to regulate the injection. Exactly for this you appear the "check Engine" and consumes you a lot more fuel. Well I hope it serves you and you can solve your problem. I recommend that you place the catalyst again even if the escape does not sound so beautiful. luck.

Hi Diego, if I bought it, without catalyst and with a silens tacho, but I will see
how
emul

OLA FRIEND! I recommend that what you should do is scan it to know why reason the focus of the check. Now I want you to know that the catalyst its function is to reduce emissions and the oxygen sensor that goes after its function is to monitor the catalyst and does not affect the injection unlike the one before the catalyst.

Thanks Diego, they told me that it could be a lack of mass that I see how much the alternator loads should be at 13.8 a14 volts, I do not know what you think of this