Quote:
Originally Posted by 37 RUBY
With regards the cooling circuit flow, does the heater circuit hold enough capacity and if blocked likely have an effect on what the main cooling system is doing? if the heater controls are set to cold, theoretically it's not involved in engine cooling - or is it on this vehicle?
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The cooling system through the heater core is constant flow regardless of the position of the cabin heater controls.
If the heater core is blocked or restricted, this will impact on heater performance and the coolant temperature won't be regulated as designed.