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I have a P2195 and P0171
2006 Ranger 2.3
Drives fine but at idle..idle gets slower till it lopes.
Changed O2 sensor,Cleaned air flow sensor,changed PCV valve,Can't find any leaks, could it be EGR...how do I check it ?
Signed...Lost
You might try cleaning your throttle body, checking for Exhaust or vacuum line leaks, Checking the pressure hoses that run from the EGR valve to the EGR pressure feedback sensor. (it is important if these are damage they be replaced with the exact replacement DPFE or Delta Flow Feedback Hoses for your vehicle, Most autoparts stores will carry the pair for under $10.
Usually if the EGR valve is stuffed up or bad it will throw a EGR flow code. P0401 or P0402 It is possible that the EGR pressure feedback sensor is going out, they often do but usually throw the above codes when they do.