Hello All,

Here'* one I've never seen before:



. . . red is the sections of missing plastic, green is cracks where the destruction continues, and purple is the shiny new blower motor cover, and below is an unmarked copy of the picture so you can see "through" my artwork:



It appears that the firewall has a layer of foam and plastic in front of it. I'm guessing this is to cut down on engine bay noise entering the cabin. The plastic cover on the blower motor is almost new. The old one crumbled as if it was made of sand at the beach and the sand was left to dry. I suspect the firewall plastic is doing the same thing.

I'm pretty sure that this part hasn't been manufactured in a couple of decades, and every other one on every junkyard car is probably in similar condition.

Does anyone know of something I could use as a replacement? I'm thinking maybe something that I could paint on or pour on that would handle the heat . . . ?

I found a previous thread where we don't have the answer to this: https://www.gmforum.com/pontiac-168/...-cover-315279/

And a thread that shows this cover in more detail and the replacement blower motor cover: https://www.gmforum.com/1992-1999-91...-cover-264667/

That last thread reminds me that I saw a description of this earlier, but still never actually saw the phenomenon so I guess it didn't register.