My car is overheating while idling at light. I have been driving it without a thermostat for about 6 months. I have had the water pump replaced and the reservoir. I have also replaced the reservoir cap. I have driven it for 3 days with engine/ radiator cleaner in it to make sure there is no clog but the car is still running hot. Any ideas where to go next?
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I'd check to make sure that the fan in front of the radiator is operational and not missing any fins or the shroud. And it would be best to install a thermostat, since your cooling system probably isn't pressurizing without one, which means it can absorb less heat.
Do not check with your hand!
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