b2500

Hello Everyone, First time posting, but I have been reading and getting a lot of help from here for awhile. I have a 2000 Mazda b2500 4 Cylinder 2.5L Manual with a P1131 code. My understanding of this code is that it is a lean reading at the upstream o2 sensor. Noticeable symptoms are...

I just bought a 99 B2500 and I am putting some money into it with clutch issues. I want to wait a couple of months to put a timing belt on it. Wanting some input on when you guys change yours.