Problem with a S10 97 Version American truck

Good friends, I tell you that I have a problem with an S10 first came with the damaged catalyst we changed it and all good now gives me the error P0141 but the problem itself is that it turns on well, it moves well but after a while it begins to give problems as if a cylinder were giving problems begins to lose strength already changed gasoline pump, spark plugs, gasoline filter, the injectors were tested. coil and the same believe that this error P0141 can give me that fault

That code in Obdii means.
- HEATED OXYGEN SENSOR (Sensor 2 Block 1) - Defective circuit.

Which means you have a problem with oxygen sensor wiring or internally you have a problem with it.
You must prove your correct operation.

Technical description

Heater of the O2 sensor of the circuit malfunction (Bank 1, sensor 2)

What does that mean?

This code means that the oxygen sensor heating circuit in Bank 1 decreases the time needed to enter closed loop. As the O2 heater reaches the operating temperature, the oxygen sensor responds by switching according to the oxygen content of the exhaust gases that surrounds it. The ECM tracks the time it takes so that the oxygen sensor to start switching. The ECM (based on the coolant temperature) is determined that too much elapsed before the oxygen sensor began to work properly, P0141 will be created.

Symptoms

It is likely that you notice a bad fuel economy of check light of the check.

Causes

A P0141 Code can mean that one or more of the following has occurred:
* Open or short to mass in the wiring
* O2 heater High -resistance wiring circuit
* O2 heater of O2 Resistance Element Element is high
* short internal or open in the heating element.

Hopefully the info serves you.
And checks the spark plug cables should give resistance about 8 khoms per meter.


Luck

THANK YOU, TUBE TO CHANGE THE TWO OXYGEN SENSORS AND PROBLEM RECOVED THANKS