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Help! Engine coolant thermostat stuck open?

Roguellama

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Tacoma3G Supporter
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2018 Ted sport with 62000km, throws engine light, scan it says thermostat, have dealer ship scan it... thermostat, truck doesnt over heat, doesn't even fully heat up unless I'm goin 120km/h. I kinda want to repair it my self. And I can't find any vids on how too. HELP! LOL
 
What does the code fully say? Does it identify that the thermostat is in fact stuck open at all times? Are you still under warranty?
 
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I didn't see it, dealership told me that's what it needs, and no the warranty is up, I'm assuming it's open because the temp gauge stays below the halfway
 
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