I was scanning for both O2 sensor volts and to my surprise both are reading almost same. The post O2 sensor which is supposed to be steady was reading almost close to pre O2 sensor and fluctuating a lot. I have a crack just on exhaust pipe just before central muffler after flex pipe. Is this causing them to read like that. Changing the whole catalystic convertor is too expensive for me. Do you think swapping the both sensors works?
Tuesday, January 9th, 2018 AT 8:33 PM