Correct! .....

 

How to replace O2 sensors:

 

If you are able to, plug in a meter that can show live data (I have an OBD reader that can talk to an app on my phone) and have a look at your fuel trims and your MAF data. My car presented something similar, and it turned out to be a faulty MAF. I got the replacement Denso off of Rockauto, and it's been fine since then. Took me awhile to find that one, tho!

 

I replaced bank 1 sensor 1 and 2 and now this is my OBD readings while idle







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Did you reset the ECU as the data is indicating MIL on? If not you want to rest the ECU. So it wipes the fuel trims. It looks like it's trying to correct itself if you didn't wipe the ECU.
Here's the ECU reset procedure. Use the fuse pull method so it will be easier.

If the car doesn't stall it was not performed correctly.

https://www.clublexus.com/how-tos/a/...our-ecu-363500

Try that then report back if the CE lights up.

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Hmmm..... calculated engine load >30% at idle and HPFP at 5xx psi. That all seems wrong to me. Mike, you ever see it that low?

 

Yeah some info is iffy now that you mentioned it. What caught my eye first was the MAF reading at idle 3.17% at idle is this a IS250? The way I see it on my phone the edges are getting trimmed not sure if it's a screen shot, or picture. It could be other issues at hand. I'm just arm chairing it.

 

MAF is in grams per second. Other than you, I haven't seen many post 250 data.

The fuel pressure and calc load puzzle me.

 

I think the last time we spoke of fuel pressure. This is what was seeing, and yes I meant 3.17 g/s. I'm so tired of Android fights with auto correct features and messaging here.

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Just recorded my screen while driving into work. I can record again if you want me to not scroll and just stay on a certain part of the readings.

https://streamable.com/0hace6

 

I tested my 250 when my MAF was giving me grief; at 750RPM, it should be 2.5g/sec, or close to it. If that figure is off, the MAF is your primary suspect.

 

Any input on this?? It's updated after I replaced B1S1 and B1S2.
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​​​​​​​So you rest the ECU, and still the same data as before?

 

​​​​​​​Yes and the fuel trims are different. They were all negative before.