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P38A Thermostat 2.5 DSE

Discussion in 'Range Rover' started by gencybay, Oct 27, 2018.

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  1. Datatek

    Datatek Well-Known Member

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    The stat has a bleed hole so there is always a small amount of circulation, plus the baffle in the RAD lets water past.
    Stats in my experience usually fail open rather than change their characteristics, you would know if it was stuck open. No harm in fitting a new stat, but do check it in a pan of water to ensure it opens correctly and fit with the bleed hole at the top.
    How many people do you need to tell you that it is not going to get hot in 2 miles?
     
  2. gencybay

    gencybay Well-Known Member

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    I suppose I'm thinking back to my petrol Volvo and various other cars with less substantial blocks. I guess that they heated up more quickly.
     
  3. Datatek

    Datatek Well-Known Member

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    Petrol engines are less efficient and always heat up more quickly.
     
  4. wammers

    wammers STILL BREATHING. Donater

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    Engine running temps were a lot lower in the fifties than they are now. One of the services regularly carried out with the onset of winter was to drain and fill with antifreeze and change the stat to a winter one of slightly higher operating temp. Then at the onset of summer change the stat to one of lower operating temp. Those were the days. Yeah rad blinds were certainly more common in those days. I would however not recommend fitting one to your P38.
     
  5. wammers

    wammers STILL BREATHING. Donater

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    The old bellows type always failed open wax stats in general unless the spring has failed fail shut. If they lose their wax they cannot open which is the usual mode of failure..
     
  6. gencybay

    gencybay Well-Known Member

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    Aha! So you're not dissing my logic entirely.

    I suppose that I could check the existing one and see what temp it is opening at but, to be honest, with the vast expense of a new one, I might as well replace it with new known to open at 80C one.

    From earlier posts it seems to be more of a faff than it was on Cortinas, which I think was the last time I replaced one.
     
  7. wammers

    wammers STILL BREATHING. Donater

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    Replacing a stat on a P38 is a lot more faff than any Cortina ever was i can assure you. Shroud and viscous fan out for a start.
     
  8. wammers

    wammers STILL BREATHING. Donater

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    The cost of a genuine stat is ridiculous from Land rover. But decent OEM are a lot less expensive. Valeo OEM is around twenty quid including VAT and post from Island 4x4.
     
  9. tanis8472

    tanis8472 Active Member

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    Did mine without removing fan and shroud. :)
     
  10. gencybay

    gencybay Well-Known Member

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    But did you do a photo essay of the process?
     
  11. gencybay

    gencybay Well-Known Member

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    Nevertheless I think that is going to have to be done. I got the lad to give me a Nanocom commentary. Up to 58, then a drop back to 53, followed by a slow climb to 75ish.

    My view is that the stat is opening at too low a temp.
     
  12. Datatek

    Datatek Well-Known Member

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    Sounds fairly normal.
     
  13. brianp38dse

    brianp38dse Well-Known Member

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    Changed mine a few years ago without taking fan of its a fiddle but can be done, take the front cover off unbolt the rail with the wires in and lift up out the way then fiddle around with a 1/4 drive set to unbolt housing I don't think I even undid the hose, well that's what I can remember of the procedure.
     
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  14. gencybay

    gencybay Well-Known Member

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    Grateful if you could change your avatar given the topic.
     
  15. donp38

    donp38 Well-Known Member

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    I would think to put some silver foil over the front grill.
    No way its going to warm up in a 2 mile run.
     
  16. tanis8472

    tanis8472 Active Member

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    No but see previous posts :)
     
  17. wammers

    wammers STILL BREATHING. Donater

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    You have still not answered the question from post #9, with all this going on where is the temp gauge needle indicating.
     
  18. tomcat59alan

    tomcat59alan Well-Known Member

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    Have you thought of movng house further away from the workplace?
     
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  19. wammers

    wammers STILL BREATHING. Donater

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    Wow top suggestion, i would never have thought of that. Top man you are Alan. ;):D:D
     
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  20. tomcat59alan

    tomcat59alan Well-Known Member

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    I'm sure you did Tony, you ok?
     
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