Nissan misfires at 2000 rpm on 1995 Nissan Maxima

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Car starts hard, idles great within minutes. Misfires when accelerator is push down fast. Slowly depressed it will go to 2000 rpms and then misfires again. Goes no higher. Codes that came up are PO130 and PO135 refering to the O2 sensor right bank. I replaced the O2 sensor right bank, plugs and fuel filter and have the same results. It now sits at my mechanics and he is stumped. Cylinder # 1 plug was semi fouled but not bad when replacing plugs. Could that particular coil be bad? Thanks for the help. Brian
(2) Answers
Here are some probable causes

* Defective Oxygen Sensor/Air Fuel Ratio Sensor
* Defective Oxygen Sensor/Air Fuel Ratio Sensor Heater circuit
* Exhaust System Leak
* Intake Air System leak including vacuum leaks
* Low Fuel Pressure
* Defective Engine Coolant Temperature Sensor
* Defective Sensor wiring and/or circuit problem
* Defective PCM
Here is some more info about these codes:
You'll find tons of info here, and even info for your technician to help diagnose this problem.