Revitalize Your Engine Oxygen Sensor Bank 1 Sensor 1 Replacement Made Easy

The fault code reads P0125 and P0135 which points to this issue, the engine starts and runs however under load or acceleration there is some hesitation. Sensor one in front of cat converter switches between 250 mv and 700 mv about 40 tines a second as each cylinder fires at 600 RPM idle. you can use oem or aftermarket sensors. i would consider it an easy job, just rent a "Oxygen Sensor Socket" from autozone/oreilly/advance/etc to ... This is what I am trying to confirm: Please reference this picture: The N55 has only 2 O2 sensors, Sensor #1 is the Pre-cat sensor which is ... ... O2 sensors relative to the bank and sensor number. Note: As ... 1 upstream O2 sensor and 1 down stream O2 sensor. In this case they ... Sensor 1 would be the upper sensor BEFORE the catalytic converter. You will find the upper's right under the hood in the exhaust manifolds, very ... Bank 1 is where cylinder #1 is located, so on the 3.3 rear of engine closest to the firewall. Sensor 1 is the upstream O2 sensor before the cat ... Went on ford parts site and it listed 4 oxygen sensor parts with very little information. Does anyone know which one I need? GM Genuine Parts Heated Oxygen Sensor Post-Catalyst Bank 1 Sensor 1. GM Part # 12705534. ACDelco Part # 12705534. Quantity Starting at $66.68. They were kicking on the Check Engine and Traction Control lights, and flashing the Cruise light. I also noticed that the O2 B1S1 voltage was ...