Deleted Coolant temperature switch (A/C) = issues?

[scheides]

Where would something be clogging my cooling system? In the past year I've replaced the water pump, all radiator hoses, and even have a PWR aluminum radiator. I've replaced the thermostat (and I'm pretty sure the radiator cap at the same time), and still this problem persists (overheating). The jumpy temp gauge hasn't happened since I posted this, but the overheating thing is going to kill me in this heat!