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03 galant coolant leaking on passenger side

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 03 galant coolant leaking on passenger side

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  • #464723
    Mrfixit24 MooreMrfixit24
    Participant

      It just started doing this today smelled coolant coming from the vents when the ac was on later on in the day steam was coming from the vents and the car was loosing coolant an the passenger side is soaked a little bit what could this be

    Viewing 13 replies - 1 through 13 (of 13 total)
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    • #464724
      MattMatt
      Participant

        Most likely the heater core is leaking. This heats the air coming into the cabin of the vehicle from the HVAC box using heat from the engine, and coolant flows through the unit. Unfortunately this usually means dismantling a fair portion of the dash to replace, and if you are a big dude like me with hams for hands, it’s not fun.

        #464725
        Mrfixit24 MooreMrfixit24
        Participant

          Yea and coolant is not staying inside the radiator either

          #464726
          MattMatt
          Participant

            Aye, it’s leaking on the floor of your car and evaporating into the cabin of your car. A word of caution: antifreeze fumes are EXTREMELY toxic. Do whatever you have to do to not breathe them.

            #464727
            Mrfixit24 MooreMrfixit24
            Participant

              Will do but the coolant has turned brown is there a way to post a pic of it

              #464731
              MattMatt
              Participant

                Take a pic and upload it to your computer, then at the bottom of the post box, there should be an option to upload the pic to your post. I would do a good drain and fill/coolant flush while you have the system open anyway. Most importantly be sure to burp the system once you are finished. Air in the cooling system can cause alot of issues. Here’s a video that demonstrates what I’m talking about, and also one on flushing a heater core that might give you some idea what you are looking at:

                Heater core flush:

                Bleeding cooling system:

                Good luck man.

                #464737
                Mrfixit24 MooreMrfixit24
                Participant

                  I’m going to need it to do this job I will upload a pic and will post and progress update later on thanks

                  #464741
                  MattMatt
                  Participant

                    Get a good service manual, and you’ll do fine. It’s not the worst job, but not the best. BE PATIENT, especially when you are working up under the dash, so you don’t break stuff. I have to walk away from stuff like this and take a break on occasion, and you may too. Don’t let the machine beat ya bro. I’m rooting for ya.

                    #464758
                    college mancollege man
                    Moderator

                      what you could do to keep your ride going
                      is take a loop of heater hose and bypass
                      the heater core.This will keep the car driving
                      and stop the leaking until you can fix it.

                      #464759
                      Louie MoscatelLouie Moscatel
                      Participant

                        ^^Thats a good tip college man

                        #464761
                        Mrfixit24 MooreMrfixit24
                        Participant

                          How can I do that

                          #464831
                          Mrfixit24 MooreMrfixit24
                          Participant

                            Update bypassed the heater core and now no overheating will post a pic of it

                            #464839
                            college mancollege man
                            Moderator

                              Great. keep us posted.:cheer:

                              #464999
                              EricTheCarGuy 1EricTheCarGuy
                              Keymaster

                                Honestly that’s what I would have done as a temporary solution so well done. You’re probably going to need heat though. Unfortunately you’re probably going to have to remove the entire dash and HVAC assembly to get to it. This also means that you’re going to need to evacuate the AC system if it has a charge in it since you’ll likely have to remove the evaporator along with the heater core. It’s a big job for sure but not impossible, take your time and keep your parts and fasteners organized and you should be fine.

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