Gen 4 to 3 engine swap air intake coolant lines. Is this correct?

Transferring 4th gen EGR has be problematic. Not just bending the exhaust manifold branch to suit, but ongoing. 3rd gen computers' programming differences maybe. Have you already done the pipe bending deed?

 

I've heard that wire swap was not actually doing anything. Well apart from messing things up.

 

Abort abort abort. All you have done is disable the EGR valve. Switching those wires simply makes the valve unable to move, while concealing that fact from the ECM so no trouble code is reported. No trouble code also means the ECM doesn't know to protect the engine from nonfunctioning-EGR damage.

You can find the rest of the details in this post.

If you let us know where you found that re-pinning advice without also finding the later correction, we should go add the correction there. I thought we had found all the places.

 

I'm thinking to "report" the above post, see if a moderator (likely Tideland) can revise the intitial post of that earlier thread. Could you guys proofread the following, what I'll paste into a report request:

Kinda complicated:

This poster followed a procedure from a 2020 thread, where 4th gen EGR components are transplanted into 3rd gen, along with a 4th gen engine. Specifically, it was advocated in the initial post of that earlier thread to swap two wires going to a 4th gen egr valve, in the (misguided) belief it would make it compatible. ChapmanF has confirmed that swapping the two wires really does nothing more than disable the EGR, making it appear there's no problem, since the car's computers just don't get any signals.

The post in which the wire swap is advocated:

Gen 4 Engine into Gen 3 Prius Partial Guide | PriusChat

And the disclaimer, later in same thread:

Gen 4 Engine into Gen 3 Prius Partial Guide | Page 2 | PriusChat

Could you please edit the intital post, saying something like this is no longer considered a way to go, doesn't work. Appreciate it's a bit of a tangle. Thanks.

 

Once upon a time, on PriusChat, you were able to go back and edit any of your own old posts at any time.

More recently, you'll notice the Edit button goes away on posts you made more than some number of hours ago.

You can still Report your own old post, and ask a mod to fix something in it, but of course that's more hassle.

If I remember right, the disappearing Edit button was invented after a past incident where a long-time valued contributor got mad at PriusChat and, before leaving, edited all of his/her old valuable posts to be empty.

 

Ok, reported.