Hey guys I am troubleshooting a hot start problem and want to replace the coolant temperature sensor today but I noticed there are three sensors in relation to the cooling system and I'm not sure which ones do what and which one I want to change.. I was under the impression that my coolant temperature sensor works fine because my gauge in my car works but now I hear they're unrelated. That stinking fuel sending relay cost me 80 bucks yesterday and it wasn't the problem.