So I broke down and bought a cloned dice and vida program. I've got a few other things I wanted to look at with it and figured one trip to the dealer would cost the same. I looked at the fuel trims and the bosch told me ltft was around 8% for both banks. When I hooked up the vida program it read rig...

It does not look like fun that's for sure lol. I will definitely look into it and give it a go. I may try the smoke test and see what happens also or just replace the hoses and oil trap since I'm sure it's never been done. Thanks again for the help and I'll report back what I find.

Thanks for the response! That makes sense if o2 sensors are known to be bad. I will check for vacuum leaks more thoroughly. I do have a digital manometer and tested for vacuum through the dipstick. It had vacuum but I wasn't sure on what the readings should be at idle and when engine is at a certain...

I checked the fuel trims tonight. As far as I can tell they weren't too far out of line but I am certainly no expert. At idle stft was 0 to 3 on bank 1 and 2. At 2500rmp stft was -5 to 3. I'm sure there is a way to get an average but I haven't figured that out yet. The lowest it would go was -9 and ...

Thanks for the responses! Much appreciated. I will replace the other o2 sensor as I figured the same thing about it being on its way out. That's good to know that the cats very rarely go bad. I do not have to pass emissions so if it ends up being the cats I will let it ride until it absolutely needs...

Thought I was in the clear but 2 new codes have come up. P0422- catalyst 2 efficiency below threshold bank 1 P0432- catalyst 2 efficiency below threshold bank 2 I haven't replaced the bank 1 #2 o2 sensor but all others are new. Is it common for the cats to go bad in these cars? Car still runs great ...

No problem. Always a bummer reading a thread and not knowing how it turned out.

Replaced bank 2 #2 o2 sensor, map sensor and codes have cleared themselves. Downstream sensor is a pita to change without dropping the exhaust.

Cleared the codes and this is what came back p0236- turbo boost sensor a circuit performance range P0237- turbo boost sensor a circuit low P0161- o2 sensor bank 2 sensor 2 heater malfunction P0056- o2 sensor bank 2 sensor 2 ho2s heater control circuit I'm thinking I just need to replace the bank 2 s...

Did the bank 1 o2 sensor 1 and plugs tonight and noticed a big difference. Idle smoothed out and is no longer running rich. Will clear codes again tomorrow and see which ones come back. The turbo circuit low code was the one I really wasn't sure about. I didn't know if this one could be caused by a ...