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Thread: How Long to heat Up for a 1.9CDTi?

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    Regular Member boba's Avatar
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    Default How Long to heat Up for a 1.9CDTi?

    My first Vx diesel so don't know what to expect here. 1.9CDTi seems to take quite a few miles to get to working temperature. About 12 miles easy driving before the needle settles at 85 or so. Is this normal? How long does yours take?

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    Regular Member MattW's Avatar
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    Mine varies depending on the outside temperature as well.

    If it's cold, I can get to work (6 miles) before the needle has even moved from it's resting place. If it's warm outside (say 14degC +) it takes about 3 miles to start warming up.

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    Full Member Penfold101's Avatar
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    Wouldn't worry about it much mate, all diesels take a while to warm up. Whel driving in freezing tempeatures and coasting down a hill, I've gotten the needle back off the scale again...

    And when I lifted up the bonnet, the engine cover was cold to the touch - and this was after 100 miles of cruising...

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    Regular Member Ste's Avatar
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    Normal, and due to the large thermal mass of the engine, and heat transfer to cylinder walls.

    Petrols generally warm up quicker due to the lighter engine, using materials with a lower specific heat capacity.

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    Regular Member boba's Avatar
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    I guess it's OK then . It was kinda chilly here this morning (3 degree warning on the display).

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    Full Member Penfold101's Avatar
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    Quote Originally Posted by boba View Post
    It was kinda chilly here this morning (3 degree warning on the display).
    You lucky lucky bast.........

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    Regular Member AndrewTi's Avatar
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    Quote Originally Posted by Penfold101 View Post
    Whel driving in freezing tempeatures and coasting down a hill, I've gotten the needle back off the scale again...

    And when I lifted up the bonnet, the engine cover was cold to the touch - and this was after 100 miles of cruising...
    Mine did that going down the A20 into Dover during the summer, it was a goosed thermostat.

    Mine generally takes between 3-4 minutes of running before the needle moves up to about 80.

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    Regular Member Ian S100's Avatar
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    Quote Originally Posted by Penfold101 View Post
    Whel driving in freezing tempeatures and coasting down a hill, I've gotten the needle back off the scale again...
    When you're coasting down a hill the fuel supply probably shuts off all together to improve economy so it won't be generating any heat.

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    Full Member Penfold101's Avatar
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    If you're in gear then I htink it does shut it off (overrun) but I was in neutral so it would have to fuel the engine or it would stall I'd have thought...

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    Regular Member Ste's Avatar
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    Friction would still generate heat, probably more than idling would generate

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