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D3 - Common Faults Quick links to all known common faults and their solutions

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  #41  
Old 13th November 2019, 08:44 PM
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Excellent, thank you gents. Will be a job for me to do in the coming weeks. I have had the fogging windscreen for a while (when the a/c is turned on to clear the screen) but didn't think much of it.
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  #42  
Old 18th November 2019, 01:34 PM
irelandbuyer irelandbuyer is offline
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Default Windscreen Fogging Up

Hi Steamship/Snap and all....

Thanks for the advice...I went at the plenum/evaporator drains yesterday. As you said, it's pretty straightforward. I was surprised though because they're bone dry. This leads me to believe that maybe there's a blockage elsewhere and water isn't making it down that far.....

I read somewhere else that perhaps it is the cowl drains...

It's becoming a bigger issue now that the mornings are getting colder. My choice is either to let the car warm up in the driveway or keep windows open...

I've attached a photo of the drains...you'll see they're spotless....
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  #43  
Old 18th November 2019, 02:51 PM
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Quote:
Originally Posted by irelandbuyer View Post
I've attached a photo of the drains...you'll see they're spotless....
Everything looks dry as well, but since everything seems clears, I'm still going to ask a stupid question.

When you had those pipes disconnected, did you try pouring some water down them to see if they were clear, or remove them to check for blockages? Theory would dictate that since there wasn't any water in them, then they are clear.

The only other thing I can think of is the carpets being wet, but then you'd probably have noticed this. I know the backs of the D2 mats have a thick rubber lining (great for holding onto loads of water), but only ever lifted the carpet in the passenger footwell of the D3 once, and don't remember if it had a rubber backing.

It was your comment about you could still hear water sloshing around making me wonder if the water has collected in the footwell(s), underneath everything else, and since it isn't being removed, it's why the windows are steaming up.
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  #44  
Old 19th November 2019, 04:14 PM
irelandbuyer irelandbuyer is offline
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Steamship,

Actually it's not a stupid question at all. I didn't think of that...doh. Where would I pour the water down from?

The water sloshing around is a different locaiton, in the roof, driver side. Which i'm not sure about because my mechanic cleared out all 4 sunroof drains. I'm going to go and check them myself again now to be totally sure.

Back to the windscreen fogging up issue, i'll check the drains but I can't think of anything else. I did read somewhere that the scuttle drains might affect also but not sure where they're located.....

Any ideas?

cheers.....
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  #45  
Old 19th November 2019, 04:40 PM
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Originally Posted by irelandbuyer View Post
Steamship,

Actually it's not a stupid question at all. I didn't think of that...doh. Where would I pour the water down from?

The water sloshing around is a different locaiton, in the roof, driver side. Which i'm not sure about because my mechanic cleared out all 4 sunroof drains. I'm going to go and check them myself again now to be totally sure.
Just pour some water into the pipe shown in your picture above (post #42). If it's blocked, you'll soon know, and some people have used the likes of Mr. Muscle in them to clean them, and then flushed with hot water. I've never had those drains out completely on the D3 (only the D2), so don't know if it's easy to do, but would give you the opportunity to snip the ends of them.

The roof one is puzzling if all the drains have been cleared, unless some other part of the sunroof mechanism has upturned edges and allows water to collect, but then it would have to be hidden from view or would have been easily spotted when clearing the drains.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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