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I own a tata sumo.Engine is overhauled 02 years back, head is replaced, radiator is replaced but engine is getting over heated i.e. temp reaches 100 c when A/c is put ON after 15 Km of running. Is it so that the engine is weak/is not able to bear the A/c compressor load ? Please help me to sort out the problem.

By Dr Sk Lakra on Apr 8, 2009


  • Plz use only normal tap water instead of the coolant liquid that you are using. After an overhaul, the engine needs another 1000-2000 kms to settle to normal working. If that has already been done, then use water in radiator as mentioned above. Also get the radiator fan checked for proper working. u might need a higher wattage fan installed. But do not do all this urself, go to Tata service station for best help and insist on the quality of work.
    Answer by Sanket Pingale on Apr 9, 2009

  • hello,

    my answer may be funny, pls excuse and check with your radiator fan is connected out wise or inwise. it was my experince. so it will be may be help you.
    pls check it with a techintion.

    Answer by Thomas on Apr 9, 2009

  • Expert Hi,

    The problem can be due to malfunctioning of thermostat or inefficient water pump. Hence please get it checked for the same.
    Answer by Shiva Shankar on Apr 10, 2009

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