Vauxhall Vectra C - Heater only blows cold | Technical matters | Back Room Forum

Sun 30 Oct 2016 14:00

Vauxhall Vectra C - Heater only blows cold - houstonceng

I have the full climate control on a 3.2 V6 engined 2005 Vectra . The heater was working last cold spell but now only blows cold. The usual causes that are listed viz the mixer servo stops working or the matrix is blocked or the heater fan resistor is blown have been checked and found to be OK. The mixer servo moves the mixer flap lever, the two hoses to/from the matrix are both hot and the fan works on all steering. Thermostat must be OK as the car runs between 80 & 90 degrees, depending on type of journey, as it has always done, and I don't think the water-pump can be duff as the car doesn't overheat.

Has anyone any other thoughts ?

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Sun 30 Oct 2016 18:40

Vauxhall Vectra C - Heater only blows cold - elekie&a/c doctor

I would suggest you check the water flow out of the heater matrix.The pipes may be hot ,but there could be no transfer of coolant.

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