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Pinpoint Test D: The Engine Does Not Reach Normal Operating Temperature

  1. D1: CHECK THERMOSTAT 
    1. Check the thermostat for correct operation. REFER to the thermostat component test in this article.

    Is the thermostat operating correctly?

    Yes 

    GO to PINPOINT TEST C .

    No 

    INSTALL a new thermostat. TEST the system for correct operation.