Engine overheating problem on a BMW 1 Series gasoline

Hello everyone, I own a 2009 BMW 1 Series with a gasoline engine and 260,000 km on the odometer. I'm experiencing an engine overheating problem. I've already replaced the thermostat, the sensor, and the radiator, but the problem persists. I've consulted two mechanics in Paris, two in Nice, and three in Tunisia, but no solution has been found. I'm forced to stop every 15 to 20 km to let the engine cool down. Would anyone have any suggestions or have encountered a similar problem? Thanks in advance for your help.

(Translated from French)

3 comment(s)

Check if the water pump is functioning properly, as a failing water pump can cause overheating issues. Ensure there are no leaks and that the coolant is circulating correctly. Let me know if this helps or if you have any further questions.

Quotation:
@CarlyMechanic wrote on
Check if the water pump is functioning properly, as a failing water pump can cause overheating issues. Ensure there are no leaks and that the coolant is circulating correctly. Let me know if this helps or if you have any further questions.

Good evening, is there a way to check if the water pump is working correctly or not? Any tips?

(Translated from French)

Quotation:
@MedUSMo wrote on
Good evening, is there a way to check if the water pump is working correctly or not? Any tips?

Yes, you can check the water pump by looking for coolant leaks around the pump area and listening for unusual noises like grinding or whining, which may indicate a failing pump. Also, with the engine cool, remove the radiator cap and start the engine to see if the coolant is circulating. If it's not, the pump might be faulty. Let me know how it goes or if you have more questions.

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