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Thread: Coolant draining

  1. #11
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    Vehicle : Vectra 1.9 cdti

    Trim : Exclusiv

    Engine : Z19DT

    Year : 07

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    The gauge on the dashboard doesn't move at all.

  2. #12
    Regular Member Sindy's Avatar
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    Vehicle : Signum

    Trim : Mohican

    Engine : Z20NET

    Year : 2006

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    You could have a look in the test menu on the display and watch the coolant temp - this will give you a good idea if the thermostat is goosed as you'll see it warm up quite quickly from cold...

    https://www.vectra-c.com/forum/showt...y-(-Test-Mode)

    Sounds like it's the gauge or wiring that's at fault to me if the heater is blowing warm. An old trick I used to do to test the wiring and gauge was take the plug off the temp sensor and ground it you should see the needle swing all the way to the red - that's in the days of single pin sensors though, sure the vec has a 2 pin one!

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  4. #13
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

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    Quote Originally Posted by Darter View Post
    Hi mate. I've had it out for a 10 mile run. The heater in the car did get warm, and so did the hoses, but I could comfortably hold my hand on them, and they didn't seem excessively hot, but I've never owned a diesel before and i'm not sure if they get as hot as petrol engines.
    They get as hot as petrol engines. Just generally slightly longer as they're more thermally efficient than petrol engines.

    Quote Originally Posted by Darter View Post
    The gauge on the dashboard doesn't move at all.
    Bearing in mind the gauge minimum reading is something like 70 deg C, that doesn't necessarily mean that it's a faulty gauge or sender. It might just be the engine isn't getting all that warm, especially If you can comfortably still hold your hands on the hoses. If both the in and out hoses feel about the same temperature, then this suggests the thermostat is stuck open and not doing its job. The in hose should feel cooler than the out one.

    As suggested by someone else, if you've got he right stereo, go into the test mode to check the digital readout of the temperature.
    Last edited by Big Dave; 6th December 2017 at 11:42.

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  6. #14
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    Vehicle : Vectra 1.9 cdti

    Trim : Exclusiv

    Engine : Z19DT

    Year : 07

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    Thanks guys.
    Sounds like the thermostat is my next job, and hopefully that'll sort it. I'll let you know how I get on.

    Thanks again for the advice.
    Alan

  7. #15
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    Vehicle : Vectra 1.9 cdti

    Trim : Exclusiv

    Engine : Z19DT

    Year : 07

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    Thanks guys.
    Sounds like the thermostat is my next job, and hopefully that'll sort it. I'll let you know how I get on.

    Thanks again for the advice.
    Alan

  8. #16
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    Vehicle : Vectra 1.9 cdti

    Trim : Exclusiv

    Engine : Z19DT

    Year : 07

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    Just thinking that I have the original sensor that I replaced, if I connect that to the wiring and then dipped the probe end into hot water I should se the gauge move. If it doesn't it must be the gauge.

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  10. #17
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    Vehicle : vectra

    Trim : sri

    Engine : 1.8

    Year : 2006

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    I have a fault like that. The gauge doesn’t move at all unless I’m sat in traffic on a warm day, then it will go up to about half way and drop back down once I start moving again.

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