Car doesnt want to reach operating temp!

Right after my car passed smog. It started to not reach operating temp,it was about a lil notch before it reach operating temp.
i used to get 200mpg on a full tank now im getting about 150. Not very good for this economy. I recently changed my thermostat because i was unsure if previous owner changed it. i bled the cooling system right after as well. well Do you guys have any ideas what could be the problem?

Comments

  • DarinDarin Wagonist
    thermo might be stuck open? did you install the thermo the right way?
  • dre1162dre1162 Wagonist
    Darin wrote:
    thermo might be stuck open? did you install the thermo the right way?

    Thats what i had thought that was wrong with my other thermo but it was fully functional. But i changed it anyways.
    I did install it right with the little thingy pointing up!
  • danzdanz Wagonist
    sounds like your t-stat is stuck open

    will it reach operational temps if u just sit there and let it idle? but drop when u start driving?
  • dre1162dre1162 Wagonist
    danz wrote:
    sounds like your t-stat is stuck open

    will it reach operational temps if u just sit there and let it idle? but drop when u start driving?

    No it just stays at the same temp.
    I already changed the t stat.
  • danzdanz Wagonist
    so if you sit there, for 1 hour, just idling the car without it moving, it never warms up?

    you never get heat out of your heater?



    if ur getting heat out of the heater but not seeing movement on the gauge check that the gauge is working correctly and verify the sender is operating correctly as well. its under the distributor.
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