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Thread: engine not getting to temp

  
  1. #1
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    leeeeshad's Avatar
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    engine not getting to temp

    Recently iv noticed my engine (Z16XE) doesn't get up to 90oC in normal driving (it used to) it just gets to 80 and stays there, unless im stuck in traffic, am i right in thinking that the thermostat is stuck open all the time letting water into the radiator when it shouldn't?

    Thanks

    Lee
    Mk4 3 door sxi

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    Sounds like thermostat problem indeed, common too, so i would go ahead and get a new one fitted
    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    is it something i could do myself, ie without draining the coolant?

    any any idea how much the part is/ how much labor would be?

    thanks
    Mk4 3 door sxi

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    Thermostat i believe is around the £30 mark, not a horrible job, you will lose a small amount of coolant, thermostat is located on front of engine, left of the exhaust manifold next to the timing cover
    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    Looks a bit like this, the top hose is removed from the thermostat housing

    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    would i need to bleed the system after? if so i think ill leave it to the garage, thanks for you help steve
    Mk4 3 door sxi

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    No need to bleed the system, just top up the expansion bottle to the Max mark, use roughly 1 litre anti-freeze then top up with water ( removing thermostat housing does'nt drain the whole system so 1 litre a/freeze is plenty ) start it up, run untill warm checking level, put expansion cap back on, keep running untill cooling fan cuts in. Re-check level when cold.
    HIGHDOWN Car Audio & Security
    Clifford, Genesis, Rockford, CDT Audio

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    thanks mate
    Mk4 3 door sxi

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    thats bizzare, it seams to have un stuck itself and is now working fine, ill keep an eye on it and will probably order a replacement anyway
    Mk4 3 door sxi

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    Thermostat is something (in my opinion) worth changing at every coolant change - every two years I think?

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