Hey I am having nissan navara d40 2011 model. The problem I am facing is that my car loses power on lower speeds especially when I am applying brakes or shifting gears but runs smoothly on high speed. And when it loses power I switch off the car and then start it again, the problem gets fixed and then comes again on lower speeds and this interval repeats on every start up. My engine check light is also ON and when I got it checked, it gave me the error message P0098 Fuel pressure regulator. Can you please suggest me what to do?