D4 A/C Compressor issue

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Originally Posted by RobA

Another most helpful thread. Our AC had a fit prior to Christmas after dragging the Q+ up through the hills on our way to Kingston on a reasonably warm day. Just started blowing warm air with temp set at 25C. Seemed to return to normal but yesterday it stared on the warm air thing again. All this in auto AC mode

Turned the temperature down to 22C from 26C and got cold air in manual mode

So our fault seems to follow this discussion just not completely sure. So would appreciate some feedback from the experts. Will need to check with our local indy's to see if either of them does AC or outsources

Rob

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Rob, I see you’re in Adelaide. If you take it to Sovereign in Kent Town they fixed mine by replacing valve. They do ac work too and can do some tests to try and diagnose.

Good luck.

Sovereign Auto | JAGUAR & LANDROVER, VW & AUDI specialists

Quote:

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Originally Posted by RobA

Another most helpful thread. Our AC had a fit prior to Christmas after dragging the Q+ up through the hills on our way to Kingston on a reasonably warm day. Just started blowing warm air with temp set at 25C. Seemed to return to normal but yesterday it stared on the warm air thing again. All this in auto AC mode

Turned the temperature down to 22C from 26C and got cold air in manual mode

So our fault seems to follow this discussion just not completely sure. So would appreciate some feedback from the experts. Will need to check with our local indy's to see if either of them does AC or outsources

Rob

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Hi Rob,
had exactly same problem. Went on for months. I also took to Sovereign motors in Kent Town who replaced the variable valve cost $960 😲but is now working fine. They told me very common fault. The valve just sticks and depending where it has stuck you get hot or cold air. Only had it done last week, they had another 3 booked in for same problem.
cheers
Pete

Guys thanks for those replies. The car is serviced at Sovereign so will book it in

Rob

I had issues with my aircon diagnosed as faulty compressor. Would not cool the car at all. Turned out to be the thermo fan on front of motor failed and caused the compressor to build up too much head pressure.

Can anyone recommend an independent in Sydney (ideally North) that can look at a/c system on my D4. It’s slow to cool and on long runs gets too cold. Sounds like the compressor valve from reading this thread

I think my D4 is doing this, or have some kind of blockage in the system. Initially thought a regas was required - Went to someone who regasses, however the Lo and Hi lines were not flowing through indicating possible blockage somewhere. The A/C is not cold now(was a tad cooler before attempting a regas). Somehow the rear unit is cooler.

So, maybe a condensor valve needs replacing? Compressor does click ON when I turn the A/C on.

Who is the go to guy in Perth? is it still Rovertech?

I did email my problem to AutoCool East Perth, they straight up said Big Work, $3000+ without looking at it yet. to replace compressor, condensor, rec dryer, tx valve , flush evaporator then regas & test.

I really cant bare a dash disassembly, been through that with my previous car JGC, whilst that was under warranty though.

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Originally Posted by imaz

I think my D4 is doing this, or have some kind of blockage in the system. Initially thought a regas was required - Went to someone who regasses, however the Lo and Hi lines were not flowing through indicating possible blockage somewhere. The A/C is not cold now(was a tad cooler before attempting a regas). Somehow the rear unit is cooler.

So, maybe a condensor valve needs replacing? Compressor does click ON when I turn the A/C on.

Who is the go to guy in Perth? is it still Rovertech?

I did email my problem to AutoCool East Perth, they straight up said Big Work, $3000+ without looking at it yet. to replace compressor, condensor, rec dryer, tx valve , flush evaporator then regas & test.

I really cant bare a dash disassembly, been through that with my previous car JGC, whilst that was under warranty though.

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Yeah Autocool are exxy. You will find cheaper elsewhere. They are assuming a complete compressor failure including Black Death presumably, hence the replacement of the majority of the system.

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Originally Posted by DiscoJeffster

Yeah Autocool are exxy. You will find cheaper elsewhere. They are assuming a complete compressor failure including Black Death presumably, hence the replacement of the majority of the system.

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Which is fair.. that's what mine was.. Dead comp.. grey death every where, massive strip to get drier off. Flush...

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Originally Posted by DiscoJeffster

Yeah Autocool are exxy. You will find cheaper elsewhere. They are assuming a complete compressor failure including Black Death presumably, hence the replacement of the majority of the system.

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I use them for had to get parts or custom hose work but the general attitude seems to be "we're booked up months in advance so we'll just quote a worst case and if you go somewhere else it's not a problem".

Is this valve sold separately and is it located externally on the compressor? Does gas need removing to change it?