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Discussion Starter #1
It finally happened on my 2017 ACE 570. Coolant temp sensor did a false spike from 200 to 250, engine and coolant warning light came on and sputtered in limp mode. Turned it off, immediate restart and ok. Did it twice between 1 hour rides. Have a replacement sensor on order. Is it on the left side of the engine??
 

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Discussion Starter #2
Easy replacement of sensor, removed crankcase vent hose for better access. Also noticed the coolant reservoir was low. All good now.
 
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