YoshiUK

The MAF output is 3.7 g/s at idle and seemed to be between 38-55 g/s driving

BachelorDays what data should I be looking at to see if the MAF is bad?

Whelp, cleaned out the MAF sensor, but it wasn't too dirty so wasn't that hopeful it would fix it. Started her up again, cleared codes and re-tested... p0305 cylinder 5 misfire. So...yay. it couldn't be one of the front 3 easy to access cylinders could it? Now hoping it's just a spark plug, not a coil pack, or fuel injector.

Hello, first time posting here. Was looking for some assistance/knowledge from folks who have worked on these cars before. I've got a 2005 Lexus RX300 and it recently started having a bit of a rough idle.RPM sat around 1000, slight vibration in the steering wheel. Additionally she's gotten really sluggish accelerating, and my fuel economy has dropped from the low 20s where it normally sits to 13-16. I pulled codes and nothing is posting. My initial thoughts were an air/fuel sensor but wanted to see if anyone else here had run into anything similar in the past. Thanks for any information or assistance you can provide.