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Coolant temperature sensor accuracy

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Old Feb 1st, 2019, 10:21   #1
hoks
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Last Online: Oct 14th, 2019 13:54
Join Date: Feb 2018
Location: Riga
Default Coolant temperature sensor accuracy

Still trying to get the car to start right in winter...
(2007 V50 2.0d)

How accurate should a coolant temperature sensor be?

Car was left standing for 8.5 hours outside. Whole day it was temperature around negative 5°C, right before starting car instrument panel was showing -6°C, but engine coolant temperature -1°C

Sice car was standing still for so long, it should be competely cold and I assume readings should be closer...

As ususal it started quick but was jerking and misfiring right after starting for a couple of minutes.

How much this measurement difference could impact the cold start?
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