Coolant Temperature Issue

Fordy

Member
I was getting a CTS High Input Fault and the car was idling poorly and sometimes cutting out.

I changed the CTS and started with opcom plugged in. I noticed the coolant temperature was fluctuating randomly and when it read -40 degC the car would cut out. I unplugged the CTS and plugged back in with the car still running and the temperature started to fluctuate again but then settled at the correct temperature.

I seem to have this issue on first start only. Any ideas what could be causing it?
 

ob one

Regular Member
the gasket on the thermostat sometimes stretches which makes the thermostat not work properly
 
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