P0171 bank 3 too lean code came on the other day, went away. Car was sputtering, misfiring and CEL was flashing. I don't suspect spark plugs or ignition coils, just replaced last summer in cylinder 3. Clean MAF sensor, put in new air filter still misfiring with codes except p0303. Car has 189,000 miles but just a jdm engine put in last March so probably 70,000 for the engine. Idk where to start, please help. Thanks
have the same problem?
Saturday, November 19th, 2022 AT 9:09 PM