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Ok so today while driving around I've noticed the normal driving temp ranges from 83 threw to mid 90's.
But when pulled up and at idle for 5-10 mins coolent temp drops right off to like 60 ish..
Now my understanding is the thermostat should close keeping engine temps up around 80 odd and then open when around 88??
So with my temps dropping so low is it unreasonable to suspect a stuck open thermostat?
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