Im reading Code 1646 and 1316 0161 and p0300 it idles rough and at 55 to 65 you can feel a small hesitation. Wherw do I start for repair. I changed spark plugs some coils.I have not changed any fuel injectors. I have 1999 xj8 4.2
This is a set of emission and miss fire codes, I feel that there is a random misfire on bank 2 that is the set of cylinders opposite #1 cylinder, one code is O2 sensor bank 2 #2 so that sensor is giving a bad signal and not necessary faulty in it self, start with checking plugs, leads, injectors and vacuum leaks on the bank opposite #1 cylinder bank, start here.