sammyc24 Posted June 1, 2014 Report Share Posted June 1, 2014 Hello, My GTI's air con has never worked since buying the car, so last week I had it re-gassed as a starting point. This has not solved the issue. When the AC button is pressed the pump 'clicks' but the fan doesn't run. When bridging the fan control wire the ac still doesn't work on both settings, so yeah. Any other suggestions as to what it could be? Quote Link to comment Share on other sites More sharing options...
jon_273 Posted June 1, 2014 Report Share Posted June 1, 2014 The fan not running could be that the low speed resistor had burnt out. That won't stop the A/C working, unless your stationary and there's no airflow going through the A/C condenser.You need to get it scanned with VCDS and check for any fault codes relating to the A/C. Quote Link to comment Share on other sites More sharing options...
sammyc24 Posted June 1, 2014 Author Report Share Posted June 1, 2014 (edited) Just to confirm by the fan running I mean the radiator fan. I will give it a scan and see what it suggestsEdit, nothing has arisen. Will try a new rad fan relay as apparently that does both Edited June 1, 2014 by sammyc24 Quote Link to comment Share on other sites More sharing options...
Skezza Posted June 1, 2014 Report Share Posted June 1, 2014 I assume the air con unit has a low pressure switch which prevents the clutch on the pump from cutting in. With that in mind, I doubt it's something like a seized compressor. Might be an electrical issue. Checked the fuse? You might want to whip the heater controls out, check the connections, also check that heater resistor. Quote Link to comment Share on other sites More sharing options...
jon_273 Posted June 1, 2014 Report Share Posted June 1, 2014 (edited) Yes, I mean the radiator fan too. It could well be the fan relay at fault, but they aren't cheap to replace which is why I'd say checking for fault codes first. Also, I wouldn't bother buying a cheap one off ebay unless you know it's genuine, a friend of mine spent ages trying to fix the A/C on his GTI and the new non-genuine relay was the problem!EDIT: I assume by "nothing has arisen" then you mean there are no fault codes. So it's probably not low system pressure prenting it working. Edited June 1, 2014 by jon_273 Quote Link to comment Share on other sites More sharing options...
sammyc24 Posted June 1, 2014 Author Report Share Posted June 1, 2014 Apologies yeah. No AC fault codes registered, It has always been a thought of mine that the fan never ran but I only use the car to go work and back in which is all back lanes and never traffic. I will try and pick up a genuine relay and go from there Quote Link to comment Share on other sites More sharing options...
danoid Posted June 1, 2014 Report Share Posted June 1, 2014 Check the fuses on top of your battery, but I believe the GTI batteries are not in the bonnet area?It's most likely those fuses Quote Link to comment Share on other sites More sharing options...
sammyc24 Posted June 1, 2014 Author Report Share Posted June 1, 2014 Check the fuses on top of your battery, but I believe the GTI batteries are not in the bonnet area?It's most likely those fuses They haven't blown, but will replace them and clean the area with electrical cleaner. Quote Link to comment Share on other sites More sharing options...
danoid Posted June 2, 2014 Report Share Posted June 2, 2014 Yer replace them, cost pennies to do, and can be quite common on other VAG cars Quote Link to comment Share on other sites More sharing options...
sammyc24 Posted June 3, 2014 Author Report Share Posted June 3, 2014 Update;Now fitted an oem used working fan relay, the fan now picks up at temperature which the other one did not do. All fuses replaced inside engine bay.Still no working air con, any other suggestions? The Pump (underneath the alternator?) Makes a loud clicking sound when the AC button is pressed, is that normal? Quote Link to comment Share on other sites More sharing options...
Skezza Posted June 3, 2014 Report Share Posted June 3, 2014 Still sounds like it could be a leak. I'd be tempted to take it to a air con health tester. They'll test your pipes etc Quote Link to comment Share on other sites More sharing options...
sammyc24 Posted June 3, 2014 Author Report Share Posted June 3, 2014 Air con pressure switch possibly? Quote Link to comment Share on other sites More sharing options...
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