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Thread: TD5 Slow to warm up

  1. #1

    Default TD5 Slow to warm up

    Hi
    My 03 TD5 seems very slow to warm up, is this normal?
    When up to temp gauge runs at about 2 thirds up.
    Don`t want to change stat if this is normal.

    Many thanks
    TC

  2. #2
    Consultant listerdiesel's Avatar
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    Default Re: TD5 Slow to warm up

    Sounds slightly like a slow thermostat, most of the D2 engines seem to run about halfway on the temp gauge, so thermostat change and check the temp gauge connection on the engine.

    Peter
    June 1999 Disco 4.0 V8 Manual GS on LPG
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    Apprentice Andy E's Avatar
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    Default Re: TD5 Slow to warm up

    How slow is very slow? can you give us a time frame. More importantly, has it always done this or has it just started happening?

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    Engineer Oldskool's Avatar
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    Default Re: TD5 Slow to warm up

    the slow to warm up bit is normal tbh compared to a lot of normal cars - i can potter round in traffic without using the turbo for 10 minutes and itll still be on one third - once its up to one third try giving it a bit of boot to use the turbo ,, should get up to temp quickly when you use the turbo

    normal running temp on a disco td5 is bang in the middle of the gauge - anything other then that indicates a worry as the temp gauge is controlled by the ecu so something is amiss somewhere - thermostat would be first port of call
    2002 td5 auto ES facelift - any advice i offer is as an enthusiast not a mechanic or an engineer despite what it says in my avatar.
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  5. #5

    Default Re: TD5 Slow to warm up

    Quote Originally Posted by landy andy e View Post
    How slow is very slow? can you give us a time frame. More importantly, has it always done this or has it just started happening?
    I can do 8 - 10 miles on a cold day before up to temp

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    Default Re: TD5 Slow to warm up

    Quote Originally Posted by dropswell View Post
    I can do 8 - 10 miles on a cold day before up to temp
    Mine is the same. I changed the thermostat gave it a coolant change but when its freezing outside it still takes 6-7 mile to warm up and if I get stuck in traffic it can drop again. It will stay at about 1/4 -1/3 for ages then jump up to 1/2. I wondered if the fan is cooling it too much but not sure how to check with it.
    Ste C.

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    Apprentice Andy E's Avatar
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    Default Re: TD5 Slow to warm up

    As oldskool says if that mileage is done at low speed and low revs on a cold day I would'nt worry about it but if you are using the tubo a lot I would.

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    Default Re: TD5 Slow to warm up

    Mine is also slower to warm up in cold weather. Noticably longer time is spent with the needle at 1/3 until it finally sneaks up to the normal 1/2 position when you look away for a moment...
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    Consultant listerdiesel's Avatar
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    Default Re: TD5 Slow to warm up

    Quote Originally Posted by slobbox View Post
    Mine is the same. I changed the thermostat gave it a coolant change but when its freezing outside it still takes 6-7 mile to warm up and if I get stuck in traffic it can drop again. It will stay at about 1/4 -1/3 for ages then jump up to 1/2. I wondered if the fan is cooling it too much but not sure how to check with it.
    The temperature should stay the same once up to running temp.

    Our V8 stays at the same point regardless of conditions once at the running temperature, that's what the thermostat is there for.

    Peter
    June 1999 Disco 4.0 V8 Manual GS on LPG
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    Default Re: TD5 Slow to warm up

    The guage does not show a real time reading. From cold it will go up in about 3 stages, as described. Mine, this year would take about 8 miles i think to get to the normal temp (very very slightly above half, just a little more than horiziontal needle). Now its cold im sure the engine will take ever so slightly longer..

    The temperature guage, does not alter real time. I was told if a problem is detected (dont know if this is engine overheat/engine gettting to certain temp or what), it will then read/change real time.

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    Consultant listerdiesel's Avatar
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    Default Re: TD5 Slow to warm up

    Quote Originally Posted by Oldskool View Post
    the temp gauge is controlled by the ecu
    The engine temperature sensor feeds the ECU with an analogue signal that is used by the ECU for engine management, and as the basis for the reading on the temperature gauge, the same as the V8.

    Peter
    June 1999 Disco 4.0 V8 Manual GS on LPG
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    Default Re: TD5 Slow to warm up

    so in conclusion the slow warm up is normal in cold weather !

    i dont think the gauge should sit at 2 thirds the way up the gauge as a normal running temp though so something is not right
    2002 td5 auto ES facelift - any advice i offer is as an enthusiast not a mechanic or an engineer despite what it says in my avatar.
    link to my work in progress thread Nanocom Evo2 Equipped


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    Consultant listerdiesel's Avatar
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    Default Re: TD5 Slow to warm up

    I'd agree about the gauge position, as per my original post.

    Warm-up time really depends on how much work you are making it do from start-up.

    My V8 shows up to temp in about a mile and a half, but heat getting through the heater takes a bit longer, although the LPG vapouriser is first in the circuit so probably slows the heater down.

    Once all hot, it is quite toasty, even on frosty mornings, you can't leave it on full heat.

    Peter
    June 1999 Disco 4.0 V8 Manual GS on LPG
    email: diesel@easynet.co.uk web: http://www.stationary-engine.co.uk
    V8 Rebuild: http://tinyurl.com/2vee7vz Sunroof: http://tinyurl.com/39d9dfn R380: http://tinyurl.com/32v2r3h
    OBDII Reader: http://tinyurl.com/36r2bv5 LPG Valves http://tinyurl.com/28v943q ABS Mod 19/12/2009 99543Miles
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    Default Re: TD5 Slow to warm up

    I was worried about mine til i read this post, mine seemed to take forever to heat up, i could drive about town for an hour, but as soon as i get the turbo involved, it shoots upto half way and the blowers are roasting! 03 Td5.
    DISCO2 2003 2.5 GS

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    Engineer Oldskool's Avatar
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    Default Re: TD5 Slow to warm up

    Quote Originally Posted by dunkyg View Post
    I was worried about mine til i read this post, mine seemed to take forever to heat up, i could drive about town for an hour, but as soon as i get the turbo involved, it shoots upto half way and the blowers are roasting! 03 Td5.
    sounds exactly like mine - last year when the outside temps dropped i really noticed it so this year im running with a radmuff to see if it warms up quicker - doesnt seem to have made much difference tbh but i do have a 100 percent oat content in there so maybe that cools a little extra
    2002 td5 auto ES facelift - any advice i offer is as an enthusiast not a mechanic or an engineer despite what it says in my avatar.
    link to my work in progress thread Nanocom Evo2 Equipped


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