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What does it mean when no heat is coming out of the vents in my vauxhall frontera?
Wiki User
∙ 14y ago
There are a few causes here. First of all check you have enough coolant, if it has run out there will be no heat transfer from coolant to heater radiator. This is dangerous to the engine.
If it has coolant, then try back flushing the cooling system, especially the heater matrix to remove any foreign object that could be causing a blockage.
When refilling, fit the antifreeze first then start the engine. Make sure you have the heater controls facing the windscreen, on hot and fan no faster than position 2. With the engine ticking over, slowly fill the system until it reaches the correct level. Leave the cap off until the thermostat opens. (When hot coolant circulates)
Recheck the level and fit the cap.
Wiki User
∙ 14y ago
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