Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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Did you have codes for these parts you installed? Where did you get these parts? Also if you have codes, what are they?
Let me know..
If you have no codes, the first thing I normally like to check is the air fuel trim readings. Do you have a scanner to check that?
Ok.. I am looking for Short Term Fuel Trim ( STFT ) readings
Does it tend to bog and loose power? The fuel trim readings will jump around. That is normal. But they are boarder line lean.
Do you have a K&N Air filter on the car? Also have you checked the Catt Converter?
Well, these catt converters tend to come apart on top. So normally you remove the upper 02 sensor and inspect the catt.
The only other thing is to try to drive with a fuel pressure gauge and see if fuel pressure is being affected when you try to accelerate. Did you try that yet?
OK.. Yes.. I have my own fuel pressure kit I use to check these cars. But it's a 500 dollar kit that does every car. So I would see if you can have the fuel pressure checked to see if that is your issue.