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2002 Jeep Grand Cherokee 4.0L ac not working

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  • #866498
    Conrad HutchingsConrad Hutchings
    Participant

      the ac system is full but the clutch still dose not kick in but when you jump the relay it kicks in the light comes on in side the jeep but still nothing i don’t know what it could be it could be a broke wire some where i don’t know what kind of wire it is or where it is looked just wondering if anyone knows what could be wrong with the ac in this jeep

      Thanks Huchters358

    Viewing 8 replies - 1 through 8 (of 8 total)
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    • #866502
      Caleb StovallCaleb Stovall
      Participant

        Is the A/C button inside the vehicle working properly?

        #866512
        Timothy SalomonTimothy Salomon
        Participant

          Do you have power coming into the control side of the relay? If so maybe the relay is bad.

          #866523
          Andrew HarrisAndrew Harris
          Participant

            So when you jump the relay does the compressor clutch engage? If so does it start to blow cool air through the vents? I’m trying to understand exactly what you are saying. Its kinda confusing.

            #866531
            Conrad HutchingsConrad Hutchings
            Participant

              yes when you jump the relay the ac compresses comes on i changed the relay and still the same problem the light on the ac button in the jeep comes but still dose not kick the ac compresses on

              Thanks Huchters358

              #866588
              Caleb StovallCaleb Stovall
              Participant

                Try checking your A/C cycle switch for correct operation.

                You can check this switch by unplugging it and jumping the wires and then running the car.

                The switch is usually located near the accumulator. (Large can looking thing)

                #866670
                Conrad HutchingsConrad Hutchings
                Participant

                  Where is it looked on the jeep because i can only find one thing on the side of the jeep with one of the lines on it and it has a 3 prong thing and thats all i can find on the jeep

                  Thanks Huchters358

                  #866676
                  Caleb StovallCaleb Stovall
                  Participant

                    I’m not entirely sure where exactly it is on your Jeep, they come in 2 and 3 write sensor though.

                    #866686
                    Ole EggersOle Eggers
                    Participant

                      So when you jump the relay, the A/C works. YAY. That´s the expensive parts.
                      Get a wiring diagram of your car and find out, why the switch doesn´t activate the relay. There is probably a reason you can find in the diagrams, as to why the switch says “on” without activating the relay. Something is broken between your switch and the A/C relay. Could be just a bad connection in a wiring socket or something.

                      Ofc there can be other reasons, why the car thinks the A/C shouldn´t be allowed to turn on. Have you had a scanner on it ? Any fault codes ? Do you have access to pressure gauges for an A/C system ?

                    Viewing 8 replies - 1 through 8 (of 8 total)
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