I'm trying to install an engine block heater in my 03 wrx but can't get to the freeze plug until I remove the "underguard" (Subie block heater instructions term). It's the semi-floppy plastic engine undertray. It's held to the underside of the engine bay by 2- 10 or 12mm (I forget which) bolts and about 6 pop-in plastic plug-type pieces. I busted the #)$^@*@_$ out of one of the plugs but still couldn't get it out, so thought I'd better get some good advice before I take a chain-saw to the front-end. I'd have to rent the chain-saw, but there's an outside chance I'd feel better when I was done. The downside- still wouldn't have the block heater installed, future coefficient of drag problems, etc.
I did a search and someone posted "you have to remove the undertray first, it's easy..." but it isn't so easy for me. Can someone help with the trick to removing these? You can't get at them from the "other side".
Also, I thought I was good to go when I first bought the car and bought Subaru Service Manuals #s 3,4,5,6,7 and 8. Now when I try to find something in them, they're all over the block- can't find what I want, and then it's mostly just drawings.
Is there a good service manual out there for this car?
I have a dodge neon and dodge's service manual is top-shelf, I learned a ton about the car from it, since it explained the function of all the parts.
Thanks for reading,