u/Holiday-Village-6183

Pulled apart my Aqua-Hot 400D today after dealing with random shutdowns for the last couple weeks, and this is what I found. The flame sensor looks absolutely toasted — covered in soot/carbon buildup and the tip looks pretty rough compared to the photos I’ve seen online.

The annoying part is the heater sometimes still fires up, so I kept thinking it was a fuel or airflow issue. Meanwhile I’ve been resetting the unit every morning just to get hot water long enough for a shower before work. Finally got tired of babysitting it and started digging deeper.

I found this replacement sensor on Amazon while looking for parts:

https://www.amazon.com/dp/B0GXDNYNM2

Has anyone here tried this one specifically with a 400D? Did it solve the issue long term or just temporarily?

Also wondering how bad this job actually is for a first timer. I’m comfortable with basic maintenance stuff, but once I started opening the burner assembly and saw all the soot/carbon buildup, I started questioning whether I should keep going or just pay someone who actually knows Aqua-Hot systems.

Opened up my Aqua-Hot 400D after it kept shutting down randomly, and the flame sensor looks pretty burnt/sooted up. Lately I’ve been resetting the unit just to get enough hot water, which is getting old fast.

Found this replacement on Amazon:

https://www.amazon.com/dp/B0GXDNYNM2

Has anyone used this one before? Is replacing the flame sensor a reasonable DIY job, or better left to an Aqua-Hot tech?

My Silverado 1500’s audio switch keeps acting up constantly.
Super annoying when I need to turn down the music to hear someone in the back, and it just won’t respond in time. Dealer quoted way too much for a simple swap, planning to DIY it myself. Found this here: https://www.amazon.com/dp/B0GW8JNYZQ

Anyone used this before? It looks like it will fit. any tips for DIY?

I swapped this part out during and oil change.This is a little screen filter for the multiair actuator system in the 1.4t engine in the Jeep Renegade. If this becomes plugged and starves the multiair actuators of oil, you get a really expensive repair bill. So I figured since I had 58k miles on the Jeep, may as well change it out. Got mine here: https://www.amazon.com/dp/B0GWLBZ47V