[Clean12Coupe]

Wow that was a lot!
The creaking noise is probably a wheel bearing - Jack the car up and wiggle the wheel side to side and top to bottom to check for play/noise - visually check every boot and bushing you can see check for leaks or dry rot.
Personally I wouldn’t worry about the water pump unless it’s malfunctioning, I think others would agree BUT doesn’t necessarily hurt if your doing things for preventative maintenance purposes - the rad cap and thermostat is a good call, you should replace the radiator hoses as well.
Intake manifold gaskets.
And yes replace the hose with the PCV.
I assume you’ve replaced the battery in this car at least once..?
Sounds like you’ve done a pretty swell job up keeping the car, along with the items you listed and possibly a few other things I’d say you’re in pretty good shape

 

[Clean12Coupe]

Well you did say you commonly back your ‘go kart’ into curbs lol -but if you don’t experience any other symptoms/issues while driving and it’s specifically at low speeds then more likely to be a sway bar end link or sway bar bushing(s) - I actually like that prognosis better for what your describing - easy to check, jack car up and grab the sway bar itself NEAR the link (but not the link itself) and wiggle up and down, if you feel any play at all then there’s your issue!
I’d keep the water pump, you already paid for it and you may be thanking yourself in a few months or years, I mean you do have 100k on the clock.. some never fail - some do eventually, I think largely based on how efficient the cooling system is working in your car and climate where you live, but yea I’d just keep it, all else fails you can probably unload it on here or FB marketplace…
Manifold gaskets are just like every other gasket, they get old and don’t do there job as well/efficiently over time, also if your engine has ever been slightly overfilled with oil then the oil will pool up in the intake manifold gaskets.. You asked for suggestions on commonly replaced parts with high mileage cars and those are absolutely on the docket, it’s your call you do what you want!!
Good luck w the maintenance overhaul brother - I think your in good shape

 

[Clean12Coupe]

When you clean all those things your car is going to freak out and most likely have to go through the ’idle relearn’ process - you should look that up if you’re gona do all that.. None of this stuff is that hard to fix/replace/maintain - if you got questions just ask on here AND watch YouTube for sure, seeing it done is super helpful…

 

[Clean12Coupe]

The throttle body is what’ll get ya

 

[Clean12Coupe]

He said he’s doing valve adjustment Bee … as for the other whom just chimed in, don’t listen to that, no car is maintenance free that’s ridiculous - yes it is a Honda Civic and some folks get away with doing the bare minimum and don’t take great care of their cars and somehow they run flawlessly for 200k miles BUT if you actually care about your car then go ahead and do what you have been Zeppy, you’ve got a good plan and all of those things should be done in order to keep the car in ‘top’ running/driving condition and that goes for any vehicle - If these other folks want to drive around in a ragged out car with 150k+ w one oil change and original brakes that’s their business fr fr... I’m sorry but that’s just a dumb comment “don’t do maintenance, it’s a waste of money” Like What!? 🤯

I have a 2014 LX sedan. My daughter bought it at 41k miles, I bought from her Mar 2025 with 172k. All maintenance was done with the minder interval. I did the CVT filter at 184k along with the fluid. When I ordered it honda said they never change those.

Never replace what the trans filter?