hey everyone i have a 2001 acura cls with code p0171.. i really don't know whats going on. A couple people told me o2 sensors but i changed downstream and upstream two times in a month... i also did a tune up and changed main relay. Car shakes after being drove for more then 30min. when i go to start it up it takes me a while to get it going.. Also did new egr and coolant temp sensor
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