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temp gauge goes up

Discussion in 'Non-Mopar Tech Support' started by geraldg, Jun 20, 2016.

  1. Rick Anderson

    Rick Anderson Well-Known Member

    May 28, 2002
    No, when the engine is off, the coolant is NOT circulating, the engine spinning runs the water pump to circulate coolant. It is very typical for engines, after driving and shutting them down, for them to get hotter. There is residual heat in the engine after you shut it down, and you stop cooling it after you shut it down, so the temp of the engine goes up a bit for a short period until it cools down completely.

    So what you saw is normal and does NOT indicate a bad sensor/sending unit.

    What were the ambient temps during this last drive?

    If they were unusually high again, then your problem is clearly a degraded cooling system, which is NOT unusual for a car of that age.

    Have you hosed out the condenser and radiator, spraying a hose through the grill? It takes 5 minutes with a hose to do this, it might be your whole problem, if it is NOT, then you only wasted 5 minutes of your time with a hose.

    After that you have to go through the typical troubleshooting steps of the cooling system. Pressure check it, etc...
  2. geraldg

    Ad-Free Member

    Nov 28, 2002
    I guess I did not state it right when driving the temp gauge will go up sometimes , after driving and the gauge went up and pulled into the garage shut the car off and then turned the ignition on, not starting the car and the gauge showed normal. I know that the temp will go up when car is stopped and not running but this does the opposite.
  3. Rickorino

    Rickorino Well-Known Member

    Jan 23, 2005
    If you go by that analysis, the gauge reads low then. Try a new sender, they are cheap. Service the cooling system since you mentioned three years ago you replaced the radiator. With the outside temps way up, engines will run hotter, there may not be a problem. You can't expect an engine to run at the same temps when it's 110+ outside versus 85 degrees.

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