With more research I ran across someone throwing those codes and the cam gear mechanisms seemed to be bad. He replaced both oil control valves and recently did a timing belt job. So it seems like it couldnt be really anything else.
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I pulled them both out and they didnt seem to have filters. I have a 98 GS400. Arent the 300s the ones with the filters? Also when I pulled them out they had a used kind of color but were very much clean. My first oil change welt like this drain oil, Valvoline Max Life blend, ran for 10 minutes, drain, filter change and Mobil 1 15,000 Synthetic. I was hoping the Max life would get into the bearings and also the VVTi solenoids to clean them out. That didnt work.
my 99 rx300 started running really ruff sputtering, codes thrown were p1346, p1349 vvt system malfunction, a/f sensor circuit response malfunction bank 1 sensor 1 bank 2 sensor 1. I checked the timing belt and it looks good its tight and all the timings marks are lined up so what should I do next I really need the car going and don't know what to try next?? help please