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A/C does not work on ’06 Lincoln Zephyr

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here A/C does not work on ’06 Lincoln Zephyr

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  • #442773
    BigCBigC
    Participant

      Vehicle: 2006 Lincoln Zephyr
      Engine: 3.0L, V6
      Mileage: 48,200

      Customer Complaint: The car’s A/C suddenly stopped working. There were no previous indications of A/C problems.

      Hi Everyone….would like some help with diagnosing. Here is what I performed so far.

      – verified complaint, turned A/C “on” with car running….only warm air blows.
      – performed refrigerant ID and air test with Robinair unit. Results were “Pass” for R-134a, 3% air.
      – hooked up A/C RRR unit and reclaimed, recycled, and recharged the unit. Recovered 1.01 lbs of R-134a, evacuated system under full vacuum for 20 min., recharged to 1.31 lbs (21oz).
      – checked A/C clutch 10A fuse….good.
      – checked A/C clutch relay…..good
      – checked 60A fan fuse…..good
      – the fan does indeed spin on its own when the motor is running.

      I have not looked directly at the electrical connection at the A/C compressor. I only had the vehicle for a short time last night. The underside of the car is covered with plastic. Also, I read online that there might be a temperature sensor inside the dash that is part of the A/C unit. If that fails, then the A/C won’t turn on either. I also have not checked the high-side A/C pressure sensor either.

      Anything else come to mind to look for? Thanks.

    Viewing 9 replies - 1 through 9 (of 9 total)
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    • #442774
      EricTheCarGuy 1EricTheCarGuy
      Keymaster

        If you know there is enough pressure in the system for it to run the next step would be to check the compressor clutch, I normally run 12V to the connector for the clutch to see if it CAN engage. If it can’t then I start with the clutch and stator. If it engages and wont’ spin see if you can turn the compressor by hand if not the compressor may be locked up. That should at least get you started. If it engages and spins then the next step is to trace the compressor clutch circuit to find out what is not allowing the clutch to engage. Good luck.

        #442775
        BigCBigC
        Participant

          Thanks Eric. I’ll keep everyone posted on what I find. Probably won’t get to look at the vehicle again until this weekend at the earliest. Again, appreciate the guidance very much.
          -Carl

          #442776
          EricTheCarGuy 1EricTheCarGuy
          Keymaster

            Anytime, keep me posted on your progress.

            #442777
            4tech44tech4
            Participant

              Yea start with the compressor clutch. check to see if you are getting power to the ac clutch with a test light. start the car and turn the ac on first. If you are getting power to the clutch try pushing the clutch close with a blunt object. I use the back of my prybar. be careful because the compressor make start to spin the instance you push it. this is not a full proof test but it is quick and dirty. Just start with testing for power at the clutch.

              #442778
              BigCBigC
              Participant

                Thanks again 4tech4 and EricTheCarGuy. While I did not perform any more work on the vehicle, the customer took her car to the dealership. Their diagnosis was that the temperature sensor inside the dash was bad, thus the A/C would not work any more. Yikes…it sounds like an expensive repair, as I believe the dash has to come out.

                Anyway, the cool part in all this is that the lady who owned the car called me to give me an update. She wanted to thank me for looking at the vehicle and providing her information on what the causes could be. She felt better informed and more confident going into the dealership for further diagnosis.

                Thanks again everyone. I truly and sincerely enjoy this website. Looks like we can close this one out!

                #442779
                terry1959terry1959
                Participant

                  automatic hvac control panel on one of my customers cars showed 18 degrees at 90 degree temps identafix direct hit was outside temp would not allow a/c to come on because auto could only go down to 60 degrees replaced sensor all good under 20 bucks for part. mounted in air baffel on this gm. good luck

                  #442780
                  Anonymous

                    Quoted From BigC:

                    Vehicle: 2006 Lincoln Zephyr
                    Engine: 3.0L, V6
                    Mileage: 48,200

                    Customer Complaint: The car’s A/C suddenly stopped working. There were no previous indications of A/C problems.

                    Hi Everyone….would like some help with diagnosing. Here is what I performed so far.

                    – verified complaint, turned A/C “on” with car running….only warm air blows.
                    – performed refrigerant ID and air test with Robinair unit. Results were “Pass” for R-134a, 3% air.
                    – hooked up A/C RRR unit and reclaimed, recycled, and recharged the unit. Recovered 1.01 lbs of R-134a, evacuated system under full vacuum for 20 min., recharged to 1.31 lbs (21oz).
                    – checked A/C clutch 10A fuse….good.
                    – checked A/C clutch relay…..good
                    – checked 60A fan fuse…..good
                    – the fan does indeed spin on its own when the motor is running.

                    I have not looked directly at the electrical connection at the A/C compressor. I only had the vehicle for a short time last night. The underside of the car is covered with plastic. Also, I read online that there might be a temperature sensor inside the dash that is part of the A/C unit. If that fails, then the A/C won’t turn on either. I also have not checked the high-side A/C pressure sensor either.

                    Anything else come to mind to look for? Thanks.

                    @@@@@@@@@@@@@ this may sound odd ,how ever it happened to me one time my r-34 needed to topped off so I purchased a couple cans of R-34 and the hose connectionn followed directions , and then when I turned on the AC it was worse, warm air came out , so I took it to a AC repaire shop and they said I over filled it and they let some R-34 out and then refiled it with a pressure gauge which I didn’t have , going on 2 years its working fine for what its worth.

                    #442781
                    EricTheCarGuy 1EricTheCarGuy
                    Keymaster

                      Please remember to mark the ‘traffic light’ to green when an issue is resolved to help us keep track. Thank you.

                      #442782
                      dreamer2355dreamer2355
                      Participant

                        Quoted From BigC:

                        Thanks again 4tech4 and EricTheCarGuy. While I did not perform any more work on the vehicle, the customer took her car to the dealership. Their diagnosis was that the temperature sensor inside the dash was bad, thus the A/C would not work any more. Yikes…it sounds like an expensive repair, as I believe the dash has to come out.

                        Anyway, the cool part in all this is that the lady who owned the car called me to give me an update. She wanted to thank me for looking at the vehicle and providing her information on what the causes could be. She felt better informed and more confident going into the dealership for further diagnosis.

                        Thanks again everyone. I truly and sincerely enjoy this website. Looks like we can close this one out!

                        +1 and thanks for the update BigC!

                      Viewing 9 replies - 1 through 9 (of 9 total)
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