acheuk

Describes the turbo components of this engine quite well. Good read if you have time.

http://www.natef.org/NATEF/media/NAT...exus-Turbo.pdf

corradoMR2

Awesome find and good read. Some interesting snippets below.


No surprises with this one as we've seen it in the Owner's Manual. Though the takeaway here is that if the tech handbook also emphasizes this, this procedure is important to follow and should not be ignored.








Lexus conservatism for the benefit of reliability...

Swacer

I think they are a little careless with the use of psi, as psi by itself does not accurately describe the situation.

It should be rephrased to read as follows:

Therefore the technicians will see a target boost of close to 15psia (0 psig) when the vehicle is a idle. (This is because all the boost is going out the waste gate). This is normal condition, because atmospheric pressure is close to 15 psia (lookie, they use absolute here). During boost conditions under WOT, the target boost will reach approximately 30 psia, which means the ECM is requesting the maximum boost pressure of 17.4 psig from the turbocharger.

I think their bland use of psi causes issues.

LexBob2

This is some good information for someone who is considering the 2.0t and wants to learn more about turbo engines.

NXOwner

This is all they need to know...

Raymond918

I tried full throttle many times, but my turbo always under 1.5psi. Can someone tell me why? Or my ECU has a problem.

ukrkoz

Oh, the fine print.... Referring to required idling time. Now, whatever goes wrong with those engines, it will be "you didn't follow the shut down procedure".

no1SomeGuy

It's x10 ... so you're seeing 15psi, look closer.

Raymond918

yeah. 15psi? Is it normal?

ching2

This only opens to a website now. Perhaps somebody can upload the pdf? Thank you.

DiverseIS

This is a really cool site I found. Show a complete diagram of the PCV system. https://toyota-club.net/files/faq/16...engine_eng.htm