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Can car be driven without thermostat?

(2001 BMW 740i)
in Rockwall, TX on July 31, 2011
runs hot quickly
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Popular Answer
on July 31, 2011
For a short period you could run without a thermostat, but the engine will be circulating fluid continuously, and the engine will not warm up to operating temperature. If your car is running hot, and the radiator has fluid, your thermostat is probably sticking and needs replacement. Better to have the car run "cold" with fluid running through the engine continuously than to overheat the engine and have it hot. I would get the thermostat replaced. Not normally expensive, but as it is a BMW prepare for the worst!

Bel Air Car Guy
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