About 2 weeks ago, my 7th gen toyota Celica overheated. I replaced the heater core, the thermostat, the engine coolant sensor and even the radiator itself. My heat worked last week and the only blew cold air through the vent inside the car, but we fixed it today thankfully. But on the downside, while trying to bleed the radiator, the fan won’t kick on. I’ve had it idle for a while waiting for the fan to kick on and nothing happened. I’ve done everything. Please help!