Vw Golf Mk4 Air con Not coming through cold.

[@xenon__8555]

Start your car. Go under bonnet. Look at your compressor you will see the outer pulley spinning but if air con is on the inner part should also spin with the outer pulley. If its not spinning theres is an electrical fault. Check fuses in driver door and also on the battery. Alse make sure that the contacts on the fuses are clean

[@GizOfWar]

Yes the inner and outer are spinnig together Fans are working Fan relay fully working Radiator temp working Fully gassed I took it to a garage and he was rather surprised no one diagnosed it before hand basicly when they connect up the gauges will tell the pressure while engine and ac are on if they turn the ac off and no pressure change then the ac pumps is not workig properly and he said im 90% sure is the ac pump as everything els is running fine and theres no blocks but im kinda not willing t8 accept the ac pump isnt wprling as it does come through a little colder at times lol I could be just kidding myself and it is completly dead haha but I hope this helps other people from waisting money of tests and high pressure senspr switch like I have thank for you reply

[@peo122]

at 0.40 the channel 43 is reading 0 thats your aircon pressure. i have a similar problem and will be changing the pressure sensor see if it work. did you ever solve the issue

[@GizOfWar]

I replaced my pressure sensor but it still doesn't work the one located near the fire wall for some reason clutch and every engages fans come but no pressure from pump so I'm guessing my pump as died

[@peo122]

ahhh ok have you got a pressure reading now

[@GizOfWar]

+Adam Pearson unfortunately no this video was after the sensor replacement but I'm going to change the pump after Christmas lol

[@peo122]

right ok how much is a pump

[@GizOfWar]

+Adam Pearson I'm yet to find out myself

[@jkecmmc33]

same problem as you richard ,did you ever get this diganosed mate..

[@GizOfWar]

Not yet but I'm just going to replace the ac pump it's not hard to do yourself just make sure you get all the gas removed and that should fix it theres nothing els I can find that could be broken

[@jkecmmc33]

Yeah mate , I've bought a control module on ebay so will try it when arrives, I'm also gearing towards the high low pressure switch , have you checked any of them ?????

[@GizOfWar]

John M I was lucky and had a friend that let me lapper with his car so I tride each part to see if it worked electrical that it like fan regulator things like that but no luck and tride high pressure switch brand new and still nothing the long I left it the worse it got now no cold air at all but full of gas so just gonna swap that pump Best way to diagnose is to connect it to the large aircon machines as they can detect pressure change as long as the clutch engages on the pump there should be pressure change when pump is on and switch off that's what a mechanic told me was the problem pump making no pressure even though the clutch was on

[@jkecmmc33]

Cheers mate, what did you pay for another pump..

[@GizOfWar]

John M there's some mobile aircon company that will extract the gas for about 40 and you can get a pump off eBay they vary from 20-300 brand and new or old

[@xenon__8555]

Start your car. Go under bonnet. Look at your compressor you will see the outer pulley spinning but if air con is on the inner part should also spin with the outer pulley. If its not spinning theres is an electrical fault. Check fuses in driver door and also on the battery. Alse make sure that the contacts on the fuses are clean