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cooling fans

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    Topic
  • #541885
    tonytony
    Participant

      cooling fans in 2002 chrysler sebring comes when ac is only. starts to boil over without ac when coolant guage is between quarter and half

    Viewing 10 replies - 1 through 10 (of 10 total)
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    • #541887
      BillBill
      Participant

        Sounds like you need a new rad cap. Even without fans running it shouldn’t boil over at that temp.

        #541890
        tonytony
        Participant

          car has an expansion tank

          #541891
          BillBill
          Participant

            Yeah…ur right. I was thinking the degauss bottle cap.

            #541893
            DanielDaniel
            Participant

              The fans will always come on when you turn on the ac. It sounds like your coolant temp sensor is bad. Do you have a check engine light on? Your temp sensor maybe tied into your temp sending unit (which tells your heat gauge how hot the coolant is.) You could also just have some air in the system. I would burp the system first. If your problem persists, use a multimeter to check the in and out voltage on the sensor. You should also use a scan tool to see what temp the computer sees compared to what the temp of the coolant actually is. If your car has the 2.5 liter you may want to take it to a shop and have them do a cooling system pressure test. Those engines are known for leaking water pumps (a leaking coolant system will lower the boiling point of coolant intern causing a boil over.)

              #541998
              college mancollege man
              Moderator

                see if this helps.If the fans work with ac.Then relays and wiring
                good.Unplug the coolant temp sensor connector.bridge the connector
                with a small paper clip or wire.see if the fan runs.If it does replace
                the coolant temp sensor.Check that your coolant is full before replacement.

                http://www.ericthecarguy.com/faq/what-to-do-when-your-engine-overheats

                #542028
                tonytony
                Participant

                  just bought the car. looks like the coolant temp sensor and water pump is new have receipts from last owner, i’ll try to disconnect sensor and test it. i put 1000 miles on car. i don’t think there’s air in system.

                  #542363
                  EricTheCarGuy 1EricTheCarGuy
                  Keymaster

                    The first step with any overheat is to check for air in the cooling system. ESPECIALLY if someone just serviced or opened up the cooling system.

                    http://www.ericthecarguy.com/faq/what-to-do-when-your-engine-overheats

                    #544505
                    tonytony
                    Participant

                      replaced coolant sensor, temp gauge reads o little higher and fans come on. happiness is. i like to thank everyone who replied to me with advise

                      #544526
                      college mancollege man
                      Moderator

                        Glad it worked out.Thanks for the update.

                        #544959
                        EricTheCarGuy 1EricTheCarGuy
                        Keymaster

                          Awesome. Thanks for the update.

                        Viewing 10 replies - 1 through 10 (of 10 total)
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