W211 E270cdi temperature too low??

Discussion in 'Engine' started by The Mirror Man, Apr 8, 2017.

  1. The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Collected my new (to me) E270 yesterday and was surprised how low the temp gauge was. The outside temp was about 14c but the engine temp gauge struggled to get above 80 on the 200 mile drive home. It was warm and sunny and for 1 1/2 hours on the M6 it was stop go. Later I took an hours rest and for the second half of the journey, after dark, the temp gauge was between 50 and 60.

    Is this normal?
     
  2. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Just spotted a very similar post which answers my initial Q. Apologises for that.
    So it's new stat time. Can someone please tell me where it is on the engine and if there is a safe or recommeded aftermarket supplier. Again, my apologies if the latter is a silly Q but I'm just getting to know the W211 and finding my way around.
     
  3. SPX

    SPX MB Club Veteran

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    You're right; it'll be your thermostat (and your fuel economy will have also suffered as a result).
     
  4. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Thanks for that. I only picked up the car yesterday. I just about managed to get it to 44mpg on the M6 when the motorway ground to a halt. It was 41.8 when I got home. :crazy:
     
  5. toolman1954

    toolman1954 Hardcore MB Enthusiast

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  6. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Thanks for that guys. I've done another 420 miles over the weekend (2 longish trips) and averaged about 38mpg. Not impressed with the mpg. The temp rarely got above 70 though.

    Do I just need a new stat or the stat and housing???
     
  7. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Thanks for that guys. I've done another 420 miles over the weekend (2 longish trips) and averaged about 38mpg. Not impressed with the mpg. The temp rarely got above 70.

    Do I just need a new stat or the stat and housing???
     
  8. Stratman

    Stratman Hardcore MB Enthusiast

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    The thermostat and housing are one and the same part.

    Be careful of the plastic fuel pipes that run close by. They get brittle with age and can crack with even slightly rough handling. Be prepared to replace them.
     
  9. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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  10. JohnDavies

    JohnDavies Hardcore MB Enthusiast

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    I have recently fitted a new stat to my ML that i purchased from eBay. Not a problem whatsoever. Saved a few squid too. MERCEDES-BENZ M-CLASS ML 270 CDI 99-05 Standard Replacement Thermostat
    ( 400593902514 )
    Add note
    ITEM PRICE:
    £21.69
     
    Last edited: Apr 11, 2017
  11. Stratman

    Stratman Hardcore MB Enthusiast

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    Given that the MB thermostats fitted at the factory fail with monotonous regularity, are they worth the premium?
     
  12. OP
    OP
    The Mirror Man

    The Mirror Man Hardcore MB Enthusiast

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    Laughably good point, well made. I have PM'ed Merc85 for a new one.
     
  13. chesterpiglet

    chesterpiglet Hardcore MB Enthusiast

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    My E270CDI struggled to get to 50 degrees. I got a MB one for around £60 with £50 to fit it. On the journey to the garage I got 38mpg & the same journey back 46mpg.
     
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