To avoid clogging my "build" thread thread with boring details and stuff that I don't actually follow through with, I made a couple threads in the maintenance forum. If you're interested in the cooling system issue, here's a link.
https://forums.turbobricks.com/showthread.php?t=358830 I have noticed the temp going up to normal operating temp at idle if I keep the heater valve closed which just further confirms that my sensor works fine. I think the temp faker delete and cold air through the radiator are making my gauge move a lot more than normal. If I still have some sort of issue in the spring, I'll continue digging because this 20 mpg business isn't gonna fly for much longer.
I also started chasing down the heated seat problem. Although I confirmed that I have an open in the grid, I haven't gone about fixing that yet. In fact, I'm going backwards. The more I started playing with the seat, the more things I found wrong with it. To make a long story short, the height adjusters would not stay level because the track was bent. When I forced the adjusters level the forward/backward adjustment (for longer/shorter legs) would get jammed. In my attempts to level everything out I induced the gangster lean into the frame.
I made a mess out of that seat , but I was not about to dig into it without any experience in upholstery. Luckily I had the perfect candidate for practice in my basement! I still had all the seats from my first wagon. They were all in great shape except for the terribly blown out driver seat. You can find everything about that adventure right here!
https://forums.turbobricks.com/showthread.php?t=358372 To make that long story short, I made the blown out springless driver seat into something much more comfy than I've ever had in a 240. We're rocking that one until I can fix up the original but previously reupholstered seat in the same fashion. If I really feel like getting picky down the road, I'll buy new foam, grid, seat heater, and an NOS '89+ cover for the seat I just did, but I'm not going to make any plans for that yet. The -'88 covers are not nearly as pretty IMO, but they're presentable.
Here are the highlights.
Blown out and ratty
Getting naked
That explains some of the pains I got from driving my old car!
Bare bones
Using pins to hold the foam in place while the 3M spray glue dried.
Dried
Torn T-shirt for reinforcement
Inside got the same treatment
Seat bottom fixes
Anybody else get yellow flakes all over the floor? The T-shirt mod is nice just for taking car of that.
Wagonmeister grid
New hog rings. I wouldn't zip tie. This stuff is under a lot of tension and I can't imagine plastic ties holding long. Hog ring and plier kits are cheap on Amazon and actually pretty fun to use.
Check it out! I went from blown out and ratty to... rigged and ratty?
It's infinitely more comfortable than it was before and infinitely less annoying than the gangster lean.
After repainting and re-lubing the track, it went into the car nice and easy. I still don't have a seat heater, and this cover is super ugly; however, it's much better than having your torso facing the radio instead of the steering wheel.
I have a lot more stuff to take care of like a leaking mid-pipe, transmission flush, and diff service, but I'll mess with all that in the spring. The car is clocking miles and getting my fiance to work without back pain. Success! It's time to work on the Camaro again.