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radiator questions

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Discussion Starter · #1 ·
Hi all. My 1970 250 keeps threatening to overheat. The radiator fan on my 1970 250 is not kicking on. Is there a minimum temperature for it to start? If so, do I need to look at the thermostat? Anyone have any troubleshooting tips for either the fan or the thermostat? Thanks!
 
Grubeguy

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71 300SEL, 16 BMW Z4, 58 MGA, 80 Triumph TR7, 85 Porsche 911
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#2 ·
Check the relay that controls the aux fan. I would also check the sensor that controls it. Mine (on a 280SE) were both shot.
 
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