ford_67 Posted March 25 Report Share Posted March 25 New engine with all new sensors, spark plugs, coils. Car has been to two mechanics and neither could figure out what is causing the codes P0172 and P0175 (Running Rich). Everything has been check. I am not sure what to do at this point. I am hoping someone else may have had a similar issue. Quote Link to comment Share on other sites More sharing options...
2late4u Posted March 25 Report Share Posted March 25 (edited) so much info needed to help your problem, like eng size and when you say new are you meaning rebuilt ,brand new, or salvage yard new, also I would say you need to find a new mechanic that is qualified to dig your problem, has any of the mechanic you talk about been the dodge dealership? yes more expensive but they are better off to fix your problem then the local garages,good luck and please report back on whatever to be your problem so others might benefit,,,,P.S. we have some great mechanics here on the blog they probably will chime in soon so keep checking back for some answers as well Edited March 25 by 2late4u Quote Link to comment Share on other sites More sharing options...
ford_67 Posted March 27 Author Report Share Posted March 27 The engine is a rebuilt 3.6l Pentastar from one of the large rebuilders. The car is a 2012 SXT AWD. I am not a novice when it comes to working on cars and I replaced the engine. This was the first engine I dropped out of the bottom of the car. It was a lot easier than pulling out than my 289 from my 1967 Ford Fairlane. I have been learning more about using an Oscilloscope to diagnose the issues with sensors. It reminds me of Electronics class in High School so many years ago. Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted March 27 Report Share Posted March 27 (edited) There are a number of youtube videos on how to diagnose and repair for those particular codes, try looking at some to help you along. You post of ALL NEW seniors, what BRAND? Bosch O2 sensors are not well liked by the Dodge engines/computers, NTK is OE supplier for all sensors to Dodge and work the best, aftermarket brands seem to have troubles. I do wonder about the MAP sensor , a prime unit in fuel ratio control, or even a bad seal gasket on the upper and lower intakes. Did YOU install those or did the "crate motor come assembled with them in place? Keep in touch with us PLEASE. Edited March 27 by 5rebel9 2late4u 1 Quote Link to comment Share on other sites More sharing options...
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