Nissan Sentra rpms?

I have a 2007 Nissan Sentra with the 2.0 mr20de engine, My rpms have been fluctuating and the cars been revving up by itself. the idles been fluctuating between the lowest 1200rpm to as high as 2500rpm. Getting a p0507 code for high idle rpm, I’ve replaced the throttle body, pcv valve, and the intake hose, tried... show more I have a 2007 Nissan Sentra with the 2.0 mr20de engine, My rpms have been fluctuating and the cars been revving up by itself. the idles been fluctuating between the lowest 1200rpm to as high as 2500rpm. Getting a p0507 code for high idle rpm, I’ve replaced the throttle body, pcv valve, and the intake hose, tried the relearn process too many times to count and nothing has worked. Any ideas?
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