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hi, i have 2006 nissan xtrail. The problem is that my car won't ever reach 2000 rpm. When i force to push pedal to get higher than 2000 rpm then the rpm will immediately drop to 10-1000 rpm and hunting and then back to normal idle. I used scantool to check sensors data.
MAF : 1.2 v - 1.58 v , cannot get higher than 1.58
o2 sensor : always 0.01-0.03V
sometime i got System too lean bank 1.
What's symptom of bad maf and o2 sensor?
Please i need helps, they replaced my fuel pump with new one and also cleaning the fuel filter but problem still exists.
Thanks...
 

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They have replaced your fuel pump and fuel filter but what has been done to the injectors ?
 
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