What's wrong with my Nissan X-Trail?

My 2001 Nissan X-Trail is giving me all sorts of problems. First, I was asked to replace the accelerator sensor and throttle body sensor, but neither fixed the car. I was asked to replace the fuel regulator, but still the car is not running properly. Can you help?

Asked on 12 November 2013 by Divinthia

Answered by Alan Ross
Did the Nissan dealership carry out a diagnostic check on the engine and if so did he get a fault code (ie P ---- 4 numbers)? If he did what was that fault code?

We would suggest that the fuel filter is checked/changed in the first instance.
Not sure why the dealer would just change different items unless the diagnostic indicated this. Other than that we would suggest that the HO2S sensor (sometimes called the Lambda sensor) is also checked/changed.
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