1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

Am I over heating?

Discussion in '200 TDi' started by GogsJsy, Aug 31, 2019.

< Previous Thread | Next Thread >
  1. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    Hi folks,

    I've had my 200TDI defender for about 6 months now and the water temp needle has always sat bang in the middle of the guage since I've had it. It is mainly used only at weekends and not as a daily driver. This last week I have had to use it for the drive to work. Only a 20 minute drive on 30-40mph roads with lots of stop start and stationary traffic. On one such drive the gauge went up past the middle point slightly, not into the red though, and stayed there for the rest of the drive.

    I've done some testing today to verify what my guage is telling me. I removed the sender from the engine and made up a test loom. Boiled some water in a jet boil and held the sender in there with a peg so just the sensing part of the sensor was in the liquid (I didn't want water getting in the top of the sender and possibly causing some issues if i just submerged it) I placed a digital thermometer in and this is what I found.

    This is my test set up. 20190831_134544.jpg
    The sender held in the water
    20190831_134052.jpg

    Here you can see the gauge in the same position when I noticed it driving the other day,and you can see from the digital thermometer its at 99 degrees.
    20190831_134500.jpg

    The stat is opening as the top hose is toasty hot (maybe not fully or its sticking - I dont want to attempt to remove the housing) , there is also luke warm water coming out the bottom hose. The radiator is not blocked with mud or crud externally. Obviously it being a pressurised cooling system the coolant is not going to boil off at 100C but after doing some research it seems that everyone else has there engine running around 80C.

    Any opinions would be greatly appreciated.
     
  2. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    Try getting an infra red thermometer pen from Screwfix or similar, they are only a few quid. You can go over the block, hoses, etc, and see exactly what is going on.
     
  3. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    Errm? Did you mean to add comments?
     
  4. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    Yes. Sorry, something went wrong. Edited it now.
     
  5. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    haha sound. Yeah I have on of them somewhere i've always just questioned their accuracy and the fact they only give surface temps, but ill give it a go and see if anything jumps out.

    Cheers
     
  6. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    Works very well for me on boat engines. If what you see is a block temperature about thermostat temperature, and a hot hose going to the rad, and a much cooler one coming back to the engine, all is probably well, and suspect the gauge, sender, or earthing.
     
  7. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    Ive shown with my test that the gauge and and sender are working correctly and that if the needle reaches that point on the guage the coolant is at 100c, my problem is that everyone seems to say 200TDIs don't run that hot...
     
  8. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    They shouldn't. Stat temperature is about 86C, from memory.
     
  9. My Old Landy

    My Old Landy Well-Known Member

    Joined:
    Aug 24, 2018
    Posts:
    1,330
    Likes Received:
    1,749
    Location:
    South
    I have a 200tdi in mine and it doesn't run hot at all. I don't run the fan unless it's really heavy traffic and it's a hot day :)
    The thermostat opens at 88 degrees and as soon as it does open, the temperature drops.
     
    Turboman likes this.
  10. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    Yeah something is definitely wrong. I plan on a a full system flush and to give the radiator a good rinse and see where I am then.
     
  11. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    Reverse flush the rad with a garden hose until the water runs clear sometimes helps. You may have to leave it overnight on an old vehicle.

    Then try the IR pen, it will tell you if there is flow or not, as well as the temperatures.

    You could try removing the thermostat altogether and driving around, that will diagnose a stat fault.
     
    GogsJsy and My Old Landy like this.
  12. My Old Landy

    My Old Landy Well-Known Member

    Joined:
    Aug 24, 2018
    Posts:
    1,330
    Likes Received:
    1,749
    Location:
    South
    That's a good idea, when I first got mine I flushed the whole system as I thought it ran hot.
    Mine was in fact a dodgy sender but it is worth it for piece of mind.
     
  13. My Old Landy

    My Old Landy Well-Known Member

    Joined:
    Aug 24, 2018
    Posts:
    1,330
    Likes Received:
    1,749
    Location:
    South
    You beat me too it :)
     
    Turboman likes this.
  14. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    Been here a long time. ;):)
     
    My Old Landy likes this.
  15. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    I'll give that a go some time this week and update this thread.

    I had done a quick flush and new coolant only a few months ago but it can't hurt to do it again and check with the IR probe. Which will hopefully save me from having to disturb them dam stat bolts
     
  16. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    You will have to get them out sometime. Better now than later.
     
  17. GogsJsy

    GogsJsy Member

    Joined:
    Jun 18, 2019
    Posts:
    32
    Likes Received:
    6
    Location:
    Jersey C.I
    I'd really rather not haha. But it would be nice to chuck the stat in a pan of boiling water and check it's operation.
     
  18. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    It is going to fail sooner or later, if it hasn't already.

    And the easiest way to check it is to remove it, and drive around a bit. If the stat is causing your problem the engine will barely heat up at all.
     
    My Old Landy likes this.
  19. flat

    flat Well-Known Member

    Joined:
    Mar 11, 2013
    Posts:
    7,117
    Likes Received:
    1,968
    Location:
    Far away from you!!
    why have your wrapped your jetboil in green tape?

    I love my jetboil, best thing i have brought :D
     
    payydg likes this.
  20. Turboman

    Turboman Rural Activist

    Joined:
    Aug 21, 2010
    Posts:
    37,321
    Likes Received:
    29,358
    Location:
    Continuously Cruising
    He appears to like wrapping things in tape, and boiling them.
     
    flat likes this.
< Previous Thread | Next Thread >