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Thread: 3.2 GSi - warming up

  1. #1
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

    Default 3.2 GSi - warming up

    I've looked at lots of other threads re. the time it takes the engine to warm up but not much specific to the V6 petrol.

    I share a few problems with other engines - temp gauge doesn't move for about 10 miles, then gauge goes to from cold to normal temp in about 2 minutes but car is roasty toasty inside after about 3-4 miles if the heater's cranked up to max. Even if I leave the heater controls on cold, time to warm up engine doesn't improve.

    As a comparison, I can run my Rover 800 turbo coupe on the drive for 10 minutes max and it comes up to normal operating temperature, even in this weather.

    Once at normal operating temp, gauge sits there between 85-90, irrespective of driving conditions.

    So why the long time to warm up? Are all V6s like this? I'm convinced this is hurting my mpg.

    Oh, I've looked to see where the thermostat housing is and what a b***h

  2. #2
    Regular Member Trel's Avatar
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    Start to temp guage moving is 3 miles on my V6 petrol. That is out on the house and straight onto a busy A'road.
    Car gets warm from about then also, that is I have the temp set at 24 and on auto so air only blown through once ehgine warm.

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    Regular Member BlueRob's Avatar
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    Quote Originally Posted by gtr1000 View Post
    I've looked at lots of other threads re. the time it takes the engine to warm up but not much specific to the V6 petrol.

    I share a few problems with other engines - temp gauge doesn't move for about 10 miles, then gauge goes to from cold to normal temp in about 2 minutes but car is roasty toasty inside after about 3-4 miles if the heater's cranked up to max. Even if I leave the heater controls on cold, time to warm up engine doesn't improve.

    As a comparison, I can run my Rover 800 turbo coupe on the drive for 10 minutes max and it comes up to normal operating temperature, even in this weather.

    Once at normal operating temp, gauge sits there between 85-90, irrespective of driving conditions.

    So why the long time to warm up? Are all V6s like this? I'm convinced this is hurting my mpg.

    Oh, I've looked to see where the thermostat housing is and what a b***h
    Don`t seem to understand this, the temp showing on the clocks is the coolant temp is it not?
    Why do you think the temp. affects your MPG...?

  4. #4
    Regular Member Karl's Avatar
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    Quote Originally Posted by BlueRob View Post
    Don`t seem to understand this, the temp showing on the clocks is the coolant temp is it not?
    Why do you think the temp. affects your MPG...?
    basically a car running at correct "normal" temp runs more efficiently, but people forget that colder air is denser and therefore burns more effectively

    I know that if I don't get up to higher speeds the car doesn't warm through for a fair while (ie coolant temp at 85ish)

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    Regular Member MysteryElite's Avatar
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    It depends where the temp guage sender is - I'm fairly sure that on all Vectras that the coolant temp sender is actually on the radiator - this won't heat until the thermostat has opened once the engine is up to temp.

    The cabin heater is (I beleive) taken on a loop from the engine coolant, therefore the engine side of the thermostat which explains why you get warm air in the cabin before the coolant temp increases.

    On other makes (older Fords for certain, and I think the Rovers as well) the coolant sender is taken from the engine block, so these show the coolant temp in the block rather than the radiator, so appear to "warm up" quicker.

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    The guage sender is half way down the radiator, so the actual coolant temp in the engine may well be hotter. Also the heater runs off the coolant system before the radiator, so your heater could well be sucking most of the heat out of the coolant before it gets anywhere near the radiator.

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    The temp gauge needles on Vectra Cs don't start to move until the temp reaches 70 degrees-They don't start from zero!

    My V6 diesel takes about 4 miles to get the needle to move and then another mile or so to reach normal temp.I can't say that there's a lot of difference between Summer and Winter.
    Last edited by diesel dog; 6th January 2008 at 13:18.

  8. #8
    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

    Default

    Quote Originally Posted by diesel dog View Post
    The temp gauge needles on Vectra Cs don't start to move until the temp reaches 70 degrees-They don't start from zero!

    My V6 diesel takes about 4 miles to get the needle to move and then another mile or so to reach normal temp.I can't say that there's a lot of difference between Summer and Winter.
    Now why did I never spot that the gauge starts at 70

    Pretty obvious now I've looked at the gauge as it's graduated 70,80,90 etc..

    Thanks Diesel Dog.

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