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they were these https://www.oreillyauto.com/detail/b/g-power-platinum-4442/ignition---tune-up-16776/spark-plug-12874/b14eb31b13d7/ngk-g-power-platinum-plug-number-7100-spark-plug/7100/4537194/2007/jeep/liberty?pos=9

P0174, P0175, P0151, and P0152. P0174 and P0175 are both bank 2. I am not a mechanic, but I do have tools. What should I do before taking it to someone? It has a loss of power, and it misfires when I rev it around 3500rpm. 112k miles 3.7L New catalytic converter 2k miles ago All new spark...