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Thread: cold heaters

  1. #1
    Regular Member krazylegz's Avatar
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    Default cold heaters

    hi all great forum

    i have recently just got a vectra 2.5 V6 CDX.

    it had cold heaters and was running hot when i got it (temp up to red on standing and at about 80c on a motorway).

    i decided to try the thermostat to try and cure the cold heaters, got it stripped and have just put in the new thermostat today (it didn't even have one in) , what a nightmare that was, i'm going to try and get it all back tomorrow.

    i also noticed that the cooling fans weren't cutting in so i'm hoping that was the reason for the temp getting hot, so i bridged the wires on the radiatior thermoswitch and the fans come on, so i have replace the switch today also.

    i'm going to attempt to flush the matrix in the morning but hot would i do that as there is a big black plastic valve thing in the way of getting to the pipes, also according to haynes it says to prime the matrix upon putting new coolant in, do this by pouring coolant directly into the matrix, is this essential?

    thanks

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    i suppose there is the possibilty of an air lock if you dont

  3. #3
    Regular Member krazylegz's Avatar
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    ok i have this all back together but heaters are still cold.

    the little connector rod down the drivers side footwell seems to be ok, the matrix pipes get red hot as does the matrix get hot itself but no heat coming out of vents.

    the only thing i can think of checking now is the actual flap inside the matrix, i have took out center console, cassette, switches etc but can see how to access it

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