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I have a 98 crown vic. My temp gauge was going from normal to cold while driving. I've replaced the thermostat. Still had the same problem. I bled the system out and made sure coolant levels were good. I then replaced the temp sensor on the cross over in the intake and now the gauge doesn't seem to work. I've replaced the sensor twice. The second one was the more expensive version, still the gauge doesn't come off cold. Any ideas??

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  • 373 Answers

Sounds like an electrical problem with the guage. Do you get constant heat or intermittent?

Posted on Jan 20, 2013

  • 3 more comments 
  • tinknocker18
    tinknocker18 Jan 20, 2013

    Yep. Heat is constant. Always seemed to stay at the same temp.

  • tinknocker18
    tinknocker18 Jan 20, 2013

    Is there a way to check the gauge? I know this is a stupid question but is could there be a fuse or something?

  • jamiem1416
    jamiem1416 Jan 20, 2013

    The only way it could be a fuse is if the fuse is loose. Not likely though. . There really is no way to test the guage without taking it out, but you can do just what you already did by changing the sensor. That would tell me that the guage is getting bad, or loose fuse. If the fuse was burned out, you would have no action in the guage. Check the tightness of fuse first and make sure it didnt burn out while you were doing the work. Good luck let me know how you do

  • tinknocker18
    tinknocker18 Jan 20, 2013

    I'm not sure about the fuse. I don't know where it would be or if there is one. However when I changed the sensor the first time coolant squirted all over the place (lesson learned the hard way) I supposed something could have shorted. Thank you for your help.

  • tinknocker18
    tinknocker18 Jan 20, 2013

    I'm not sure about the fuse. I don't know where it would be or if there is one. However when I changed the sensor the first time coolant squirted all over the place (lesson learned the hard way) I supposed something could have shorted. Thank you for your help. And there is no action on the gauge anymore. It just stays in the cold position.

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SOURCE: 97 transport 3.4 engine- New radiator,

Are your cooling fans working? that will definately be a problem if not working. if they are working shut car off and feel the radiator is it the same temp all over or is it hot in only top or one smaller area. if you do not have same temp feeling on all of radiator your radiator may be plugged.

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SOURCE: radiator fan on 03 crown vic runs all the time.

YOUR ENGINE IS GETTING TOO HOT.THERMOSTAT BAD OR RADIATOR CORE CLOGGED AND FRONT GRILLE AIR FLOW BLOCK FROM DEBRIS OR THE COOLING FAN RELAY STUCK CLOSED POSITION MEANING BAD RELAY.

Posted on Apr 04, 2010

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