230F sounds way high for low?
Number of times I'd heard the fan on high, I could probably count on one hand over the course of some two decades ownership LoL. But for a great chunk of its life it was overcooling.
no thats about average. most gm products operate in the 215 to 230 range. fans dont come on till 250 to 270 in some applications. as long as the system functions properly and there is sufficient pressure 230isnt very high
Running on low at 230F sounds risky considering the coolant may start to boil around 260F. Properly working it knocks the temps down quick under most conditions though. My 'scort had a lot more getup and go being overcooled. On the rare occasion it did get hot really hot it was like press the pedal and wait because I wasn't used to it. Downside to overcooling was the carbon production; eventually clogging the cat. (took years)
230 is only 18* above boiling temp with no pressure. with a proper cap in the 15+psi range that's not an issue. is more of a 'owner preference' thing. could always figure out what the resistance of the temp sensor is at that temp and add some inline resistance to it inorder to trick the pcm.
I don't know if someone put a low temp thermostat in mine but driving I'm usually around 188-193 degrees. When idling for a while the fans come on around 220. I have a 97 2.0 so I don't know if this applies to your vehicle.
My fan typically activated on low once the gauge was at/near the middle. That would knock down temps pretty quick. If forget where high/windtunnel speed would activate... especially since that was an incredibly rare occurrence.
Funny enough, the former owner of my car had removed the fan and left it out for years. I re-installed it but I don't think it's come on for me for several years either, only once when I was in a horrible traffic jam during highway construction.
But I live in a more or less Seattle climate.