Hello Guest, welcome to the initial stages of our new platform!
You can find some additional information about where we are in the process of migrating the board and setting up our new software here
Thank you for being a part of our community!
Yes, I meant to type O2 sensor.Readings from the smog point right at a cat to be honest, as Erik mentioned as well.
You said you installed Bosch but didn't say what? On the O2? Eh, it'll work, life is a lot better, mileage and performance improved on the NGK/NTK O2, which I could find easily at Orielly and a few other chains, online from Summit, etc.
Loose plug wire or plug "tip" (screws onto plug/where the wire connects)?
Good cap, rotor, wires and plugs?
Cylinder drop test at idle may identify an offending cylinder. Unplug on injector at a time.
All hoses new...replaced everything with either Genuine Volvo vacuum hose or DO88 silicone. I'll triple check my boost clamps.Air leaks cause stuble going into boost. IAC hoses, IC coupler hose, or poor turbo inlet hose; they get soggy at the bottom at the turbo and leak.