Decided to tackle this project to fix a leaky evap, and now most deff a leaky heater core.

So I have the box apart, flipping side to side letting all the junk fall out. When I move everything out of the way, I have a little plastic piece (see pic) sitting on the floor. Cannot figure out for the life of me where it goes.

 

Here's some pics of that baffle and where it goes:

 

Thank you so much man! I would have never figured that out!
What is it's purpose?

 

I have no idea what its purpose is.


I just happened to stumble upon these pics in a thread so I stole them, just in case someone could use them.

 

Well, I really hope it isn't important. I had to leave it out because it wouldn't stay in place. Just kept falling out as soon as I moved the box.

If it causes excess heat mixture, I'll put in an in-line valve to keep out hot water flow.

 

Good luck.