Feedback is the gauges aren’t a good indicator. Well worth getting it dumped, weighed and refilled.Quote:
Originally Posted by shack
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Feedback is the gauges aren’t a good indicator. Well worth getting it dumped, weighed and refilled.Quote:
Originally Posted by shack
Gauges are a decent indicator of "is it running or not". ie. If the displacement valve is stuck you'll have a low high side and high low side (ie it's not moving much gas). You won't get a reliable indicator of charge level though.Quote:
Originally Posted by DiscoJeffster
I've never played with a dual evaporator unit, but it would be worth checking the pressures when it's working well (ie the rear is running flat out) vs not working well (or at all).
If the symptoms are reproducible it should be a doddle.
Given the described symptoms, have a think about this as a scenario.
A sensor is keeping the displacement valve wide open. With the front evap only the thing gets so cold it ices up. Requires a manual off/on cycle to defrost it. With the rear evap on the extra demand is enough to keep the suction temp above freezing and everything is peachy.
If you can manually turn it off then it won't be a physically jammed valve. Cabin temp sensor telling the controller it's always too hot? Do you have a scan tool?
If the evap is icing you'll see that on the gauges anyway.
All fixed now,
Was just a partially blocked pollen filter, I'm pretty pleased to say the least...
Mine was fixed last week - new compressor.
Regas last summer and pollen filter didn't help. Compressor fault diagnosed I don't know what exactly.
Happily covered by my extended warranty/insurance.
Generally it a $60 displacement valve in the compressor that fails but a dealer won’t change the valve as it’s not a spare part for them. AC places will sometimes if they can’t get the customer to spring for a complete compressor. I had my valve changed when I had the body off as they had to degas anyhow and access was easier. Definitely much quicker to start cooling than it was. Sometimes it took ten minutes before it would work.Quote:
Originally Posted by jwb
As a side note, VW compressors eat themselves regularly and spit crap through the system so their repair costs are far higher. Compressor, condenser, etc all have to be replaced else the crud will contaminate and destroy the new compressor.