So I have had my 2003 for 2 years now and over time in the last year or so it has a lope to it at idle. I have replaced the FCA and new fuel filter on the fass as of now. I'm hoping to check the fuel pressure sensor and the FUEL RAIL PRESSURE RELIEF VALVE also, are those good things to check/replace to possibly fix my problem?? My last resort is thinking that it may be injectors but wanted to try these other fairly simple fixes first. Also if it helps there is no fuel rail fluctuation on my gauge or RPM movement either.

any advice APPRECIATED thanks, dalton