Heater only works when car is travelling, blows cold when ticking over. Any help?
Heater Problem
Nov 20, 2005
3 Replies
low coolant level, lose pump drivebelt, faulty or failling pump.
Year/model?
Could be a bad heater control valve or low coolant level (badly bled).
... or a bad axillary water pump if it has one.
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