Above Forum Ad

Collapse

Announcement

Collapse
No announcement yet.

strange air con problem MK4 GTi

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • strange air con problem MK4 GTi

    hi there

    after the first stinker hot day in Adelaide since i have had my golf, i fould that the air conditioning has a strange promlem

    basically what happens is that the system will blow hot air out while the car is stationary ie. at the lights etc, but will start blowing rather cold air out when driving. i also find that he car as a bit of a lump in the throttle when cruising at a steady speed. ie at 60km/h you will feel the engine jump as if the air con is cutting in and out repeatedly every 20-30 secs

    just wondering what could be the problem, at first i thought it just needed a gas top up, however the fact that i can feel it cutting in and out is the main point of concern here

    any advice appreciated

    dan
    1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
    ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

  • #2
    Without pretending to be an aircon expert, my old car did something similar and it was the compressor clutch dying on me. Eventually it completely died and had to be replaced.
    But I would get it checked rather than trust my word
    NickZ
    Former ride: MY07 Black Polo GTI
    Current: MY09 Blue Passat R36 Wagon

    Comment


    • #3
      Are the cooling fans running when the engine is idling and the air con is on?
      2001 Bora 4 Motion Sport now used by number two son
      2011 Skoda Octavia Scout now with Underground Performance tune
      2010 Jetta 125 tdi dsg for the misses - Impressed
      2006 Polo GTI - Enhanced by some of Gav's magic - Absolutely loving it

      Comment


      • #4
        Also not an expert here, but it could be the compressor starting to die (or dead to the point where it's not that useful).

        I just had my Mk3 compressor replaced and dear god to I love my AC.

        If it has an engine or heartbeat it's going to cost you.

        Comment


        • #5
          I`d try gas first, with tracer dye and take it from there.
          sigpic Camden GTI Performance. VW / AUDI Specialists
          All Mechanical Work, Log book Servicing, New and used Parts and Imports
          19-20/6 Badgally Road, Campbelltown, 2560
          02 4627 3072 or 0423 051737 www.camdengti.com

          Comment


          • #6
            Originally posted by Bora Sport View Post
            Are the cooling fans running when the engine is idling and the air con is on?
            yher the fans go, just blow hot air when the car aint moving

            jeez, the cars only got 65k on the clock, i would have thought the air con compressor would last longer than that

            anyone know how much a new compessor would be?
            1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
            ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

            Comment


            • #7
              Air con compressor

              Hi, I have a similar problem with my other car (Holden Jackaroo).

              The problem was diagnosed as the clutch on the air conditioning compressor. It started playing up and then blowing air con fuses.

              For a new compressor, I was quoted $1000-$1200 (non genuine) + fitting, + regass +, +, +

              I was also quoted $450 to have just the compressor clutch reconditioned and refitted to the existing compressor.

              I know this is not VW prices but might give you some idea as to how much you are up for.
              2010 90TSI Manual / Comfort Pack / United Grey
              sigpic
              RICE - Leave the useless wings to the Penguins...

              Comment


              • #8
                Originally posted by DaN tHe MaN View Post
                hi there

                after the first stinker hot day in Adelaide since i have had my golf, i fould that the air conditioning has a strange promlem

                basically what happens is that the system will blow hot air out while the car is stationary ie. at the lights etc, but will start blowing rather cold air out when driving. i also find that he car as a bit of a lump in the throttle when cruising at a steady speed. ie at 60km/h you will feel the engine jump as if the air con is cutting in and out repeatedly every 20-30 secs

                just wondering what could be the problem, at first i thought it just needed a gas top up, however the fact that i can feel it cutting in and out is the main point of concern here

                any advice appreciated

                dan
                One or the other :

                - You need to have this regassed
                - You need to replace the compressor AND have it regassed

                Take it to a specialist ASAP and hope for the best ; meanwhile, don't use it as you can do more harm than good if the system is low and there is no oil in the compressor left to "lube" it...

                cheers

                P.S installation is not hard , any system can be installed at home; I have done 3 aircon systems before and also fitted to a car that did not have it from factory ( although it had the brackets in the dash,etc ). You just need to use new o-rings and tighten the pipes well, then take it to someone to fill it up and test for leaks.
                2001 Audi A3 1.8T manual | Giac stage 1 | 3" custom down pipe |TT brake carriers and disks | Eibach pro kit | S3 wheels |APR R1 valve
                2002 BMW M3 6sp manual | Macht Schnell stage 1 intake | Rogue Engineering power pulleys | CSL OEM Wheels | Rear LED lights

                Comment


                • #9
                  A new compressor from VW is $1800. Im getting a changeover one for $750 from Nippon Air in Melbourne.

                  Comment


                  • #10
                    Originally posted by FknDubbin View Post
                    A new compressor from VW is $1800. Im getting a changeover one for $750 from Nippon Air in Melbourne.
                    jesus some crazy prices there

                    so is it fairly common for these to bugger up so soon? my car has only 65,000kms, and would only have used the air con in the summer months, i dunno, just doesnt seem right for it to be playing up so soon. the air con in my old 94' corolla was still going strong at 250,000

                    could it perhaps be something to do with the electrical system such as a relay or someting like that?

                    1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
                    ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

                    Comment


                    • #11
                      Originally posted by DaN tHe MaN View Post

                      could it perhaps be something to do with the electrical system such as a relay or someting like that?

                      Could be something simple like that, could be low on gas due to a leak. Best get it checked out by an expert SOON because that may prevent it from being something more expensive.

                      Cheers

                      George
                      06 Jetta 2.0TFSI Killed by a Lexus!
                      09 Eos 2.0TSI DSG Loved this car but has now gone to a new home!!
                      14 EOS 2.0 TSI has arrived!

                      Comment


                      • #12
                        Just today I have noticed mine doing exactly the same thing
                        You can tell the compressor is disengaged at idle, and as Dan said, at about 60k you feel a small jolt/shudder whatever, and the aircon goes cold again.
                        Does sound like a clutch, but I'm going to get it checked out...

                        Comment


                        • #13
                          Originally posted by sierra055 View Post
                          Just today I have noticed mine doing exactly the same thing
                          You can tell the compressor is disengaged at idle, and as Dan said, at about 60k you feel a small jolt/shudder whatever, and the aircon goes cold again.
                          Does sound like a clutch, but I'm going to get it checked out...
                          i gave a vw workshop a call on friday and asked them about the problem

                          they were confident that it wasnt the air con compressor, and said that it was very rare for these care to have major problems with low k's like mine

                          if you find out anything post it up, i cant take my car down for a week or two as im flat broke this week

                          regards dan
                          1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
                          ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

                          Comment


                          • #14
                            Well, i had lotsa probs yesterday. A hunting idle issue, car stalling, loss or cruise control... not fun

                            Took the car to james at Audvolks this morning who kindly fit me in really early. We ran a VAGCOM check and low and behold, lotsa errors all reporting problems with the throttle body. James explained that there is a small motor with a twin rail resistance adjustment on the side. Apparently the ECU looks for a rating of 100, so if it's receiving a signal of 36 from the throttle body, this motor moves around until is matches 64, giving a total of 100.

                            Sounds like this has seized/broken whatever, and the throttle body is going haywire. Apparently not all that common, but not unheard of. We cleared the codes, did an ECU reset and will be taking the car back on Thursday.

                            Funny thing was, the car had no problems after all of this. Aircon, perfect all day, cruise fine and no idling/stalling/starting problems!

                            Comment


                            • #15
                              Originally posted by VW Convert View Post
                              Could be something simple like that, could be low on gas due to a leak. Best get it checked out by an expert SOON because that may prevent it from being something more expensive.

                              Cheers

                              George
                              If there is not enough gas in the system then the Air won't even switch on. It could be that the fans are not working and therefore cooling only occurs while the car is moving.

                              If you have the ECON button switched I think the Air switches in and out as it needs to, to maintain the temp you have set. Have a read of the owners manual for info on how that works.
                              optimumcode@gmail.com | https://www.vwwatercooled.com.au/for...i-;-79012.html | https://www.facebook.com/TTY-Euro-107982291992533

                              Comment

                              Working...
                              X