What to Do When the Engine Coolant Doesn't Circulate?

2 Answers
DeSilas
07/24/25 11:56am
Fill the radiator with water and secure the radiator cap. Pinch the return hose halfway with one hand while revving the throttle with the other hand.
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Juniper
08/11/25 6:06am
When my car's engine coolant isn't circulating, I need to be extremely careful because continuing to drive could lead to overheating and engine seizure. Common causes include insufficient coolant - I'll pop the hood to check the reservoir level and top up with antifreeze if low; a faulty or non-functioning water pump (abnormal sounds or no temperature change in hoses can indicate this); a stuck thermostat that won't open; clogged or leaking pipes (like aged/cracked hoses); or a blocked radiator. If the temperature gauge spikes while driving, I'll immediately pull over, turn off the engine, and set the heater to maximum to aid cooling - never push a overheating engine. Safety first - I typically contact a repair shop for comprehensive inspection and part replacements. Regular maintenance is crucial: check the cooling system and antifreeze concentration every six months to prevent clogs and corrosion.
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