190e-1.8litre,petrol,auto-kreg-1993

Discussion in 'Engine' started by SPS, Jun 3, 2002.

  1. SPS

    SPS Active Member

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    done 108k miles,regularly serviced by myself/reliable mechanic friend -it runs hot in traffic,needle climbs to 120 degree mark(top white mark just below the red mark on the temp gauge),but never boils over,and needle returns to the centre after electro-magnetic fan cuts in. .My car has three sensors on the front left hand side of the cylinder head,my suspicion is that the coolant temperature fan switch opens late,hence it runs hot,can anyone tell me which of these three switches described above is the one i need to replace?

    ps--have replaced the coolant at the 108k service and checked that the radiator is not blocked-it is hot all over-no cold spots-therefore the stat must also be ok.

    look forward to some replies -by the way this forum is a great place to share ideas/help each other .
     
  2. Dave Elcome

    Dave Elcome Hardcore MB Enthusiast

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    Location:
    Maidstone, Kent.
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    300TE
    I'm sure Matt Crooke will pick up on this thread, he has had some experience with 190's overheating, and the cure. <img src="http://www.mbclub.co.uk/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>
     
  3. OP
    OP
    SPS

    SPS Active Member

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    dave,

    thank you for your reply,will await matt's reply.

    sunil
     
  4. Dave Elcome

    Dave Elcome Hardcore MB Enthusiast

    Messages:
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    Location:
    Maidstone, Kent.
    Car:
    300TE
    Another thing that people often forget is the engine thermostat, these are far from a &quot;fit for life&quot; part, if yours has a reasonable mileage, and you don't know when the stat was last changed, then fit a new one, everyone can afford £5 for new one!!
     
  5. OP
    OP
    SPS

    SPS Active Member

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    dave,

    yes, i agree it would be worth changing the thermostat as it is a low expense item but doing a vital job-i think the original one is still fitted but some how feel that a faulty thermostat would not explain why the electromagnetic clutch cooling fan cuts in at 120 degrees C instead of 100 degrees C.
    Still waiting on matt's reply.

    regards ,

    sunil
     
  6. OP
    OP
    SPS

    SPS Active Member

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    <img src="http://www.mbclub.co.uk/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>  <img src="http://www.mbclub.co.uk/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'>

    just an update on the cooling fan switch-replaced it today and car no longer overheats,fan cuts in at about 100 degree mark on the temp gauge and needle now never climbs towards the red mark on the gauge-success at last-the thermostat/radiator was not faulty.
    the switch cost 8.40+vat from eurocarparts-the stealership wanted 10+vat.
    sunil
     
  7. Koolvin

    Koolvin Administrator Staff Member

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    Staines
    Car:
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    thanks for the update Sunil!
     
  8. OP
    OP
    SPS

    SPS Active Member

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    good to see that i am getting replies to my posts.

    enjoying the turkey v costa rica match!! <img src="http://www.mbclub.co.uk/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'>
     

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