Failling smog test...help
My name is Pete and I own a 1990 Pathfinder XE with 209K on the original VG30E that has never seen a rebuild. I have done all the routine maintenance since 1993. This is the first year I have failed smog at the 2500 rpm test. At idle, the truck passes. I am thinking that the O2 sensor and cat might be gone and I was going to replace them, but I wanted to check out the forums and find out if there might be some more help. I also have minor nuances like the temp guage is slow and the fuel guage will not read full when I fill up, hard shifting with a brand new transmission from Nissan. Well these are a few issues. Thanks for taking the time and reading.