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A/C Gremlin

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dubu8 View Drop Down
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Topic: A/C Gremlin
    Posted: 23-Jul-2018 at 18:15
Update:

1. Was leaking oil at the oil cooler fitting. Mechanic managed his wizardy and got another fitting.
2. Washer fluid was from a hose (can't remember excatly which)
3. Climatronic unit went bad (didn't see that coming but makes sense why the A/C would never come on
4. Odd amounts of junk getting caught in the orifice filter
5. Some fitting in the AC lines where replaced
6. Chance my fan may we bad
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  Quote RobG Quote  Post ReplyReply Direct Link To This Post Posted: 23-Jul-2018 at 15:55
wash fluid leak could be on the headlight washers, same tank although the headlight washers stop working when the tank is between 1/2 to 1/3 full (so you can still scoosh the windows) On mine one of the feed hoses perished just below the washer jet.
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Posted: 26-Jun-2018 at 05:38
No answer from the shop yet

Ongoing update

1. Leaking unknown liquid looks like oil, brown/orange in color
2. Topped off my washer fluid and i'm dripped out a gallon over the last few days
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 05:00
Will ask in the morning
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  Quote Uberhare Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 04:28
see edit above. ECU will also show if it is commanded on I believe.
04 Passat W8 Wagon,10 A3 TDI, 05 Passat TDI Wagon (6spd M/T), 93 Corrado VR6
89 VW LT31 Florida, 89 Vanagon Whitestar, 67 Beetle Limo, 64 PA28-140
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 04:27
Might have jumped the high pressure valve. The result was cold air in the cabin but the methodology of it's execution.

I can gladly ask any questions and ideas you may bring to this topic

Bear with me I understand in theory what he has done but I wasn't actually there.

Oddly though my engine bay I on the hotter side, says within operating temperatures no problem (recent thermostat replacement) but ambient temperatures are off by about 10°F
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  Quote Uberhare Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 04:17
No you can't "jump" the compressor on this car, in fact you can damaged the RCV (refrigerant circulation valve) in doing so.

Sounds like the ECU isn't engaging it. Check the thrust sensor with vagcom - maybe it thinks the system is low from a faulty reading.

Edited by Uberhare - 22-Jun-2018 at 04:27
04 Passat W8 Wagon,10 A3 TDI, 05 Passat TDI Wagon (6spd M/T), 93 Corrado VR6
89 VW LT31 Florida, 89 Vanagon Whitestar, 67 Beetle Limo, 64 PA28-140
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 04:16
Correction:

1. Compressor bearing had failed and was squeaking

Clarification:

1. Where me and my mechanic stopped at was that he can jump and force the compressor on but it's just backing up pressure and the fan isn't turning on with the A/C on.
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  Quote Uberhare Quote  Post ReplyReply Direct Link To This Post Posted: 22-Jun-2018 at 04:12
Compressor couldn't have been seized. They run full time, and have a control valve in the back that regulates pressure/bypass. It would have thrown the belt of the compressed locked up.

Did you check pressures hi/low with it engaged?
Do the fans come on when you engage it?
Have you checked the output to the compressor to see if there is a duty cycle present?

The system is not rocket science. Just have to work through the problem.
04 Passat W8 Wagon,10 A3 TDI, 05 Passat TDI Wagon (6spd M/T), 93 Corrado VR6
89 VW LT31 Florida, 89 Vanagon Whitestar, 67 Beetle Limo, 64 PA28-140
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  Quote dubu8 Quote  Post ReplyReply Direct Link To This Post Posted: 20-Jun-2018 at 19:22
Update Alert:

1. A/C not working still
2. Replaced the Condenser to see if it's a mechanical part to no avail
3. Me & my mechanic are stupped
4. He's going to reach out to an engineer back he know from the factory floor (Germany I assume)
5. Only idea we came up with is comparing a working W8 to mine but not sure if their are any locally to NYC.
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