993 Water Leak!

[Guest]

[] A water leak on an air cooled car?
If it rains or I wash the car it steams up inside so all windows are totally covered within minutes of starting up. The demister not being the strongest could go for half an hour with the aircon on and it would not clear it, the only solution is to open all windows and the roof to allow it to air, not a ggod idea if its raining. As I do not use the car much in the winter its not a major problem but one that needs addressing.
Any ideas would be appreciated.

 

[Chris Parry]

In all probability either a bad windscreen / rear screen seal, or clogged sunroof drain tubes.

Lift the carpets and check which area is damp. Because of the design of the floorpan you should be able to indentify which side of the car is leaking (unless there's over 6 inches of water in there [] ).

Try opening the sunroof and looking for the small diameter holes at each side. If you pour water down each hole you should see it drain straight out underneath the car - If it doesn't, then the drain tubes could be blocked.

Try starting with that!

Chris

 

[zrcg1]

From what youve said, and in the absence of any other info, I would guess your front demister fans are not working correctly. Most common cause is the auxilliary blower fan not running, due to 1) Relay, 2) 30A fuse or 3) Motor failure.

There seems to be a dependancy on the front fans running in high mode and the rear blower fan working. Upshot is the front fans dont do very much in slow speed, and the condensation will build up in the front vent over time. When it happened to me a while back, there was so much condensation the dials were misting up to the point where you had to wipe them down.

You can check it by switching ignition on (engine not running), turn heater control to hot, turn fan speed to high (4). In the engine bay, you should hear the auxilliary blower fan running at high.

Once fixed, and run for a while to dry everything out, demisting should take no longer than a few minutes.

Chris

 

[Guest]

Chris Hi
The carpets have no damp on them, no sunroof, just Targa roof. It seems to come from the vent sysyem somewhere. If I wash by hand and keep away from the engine grill and turn fan to off it is not so bad, turn it on and you cannot see a thing.
Thank you.

 

[Guest]

Chris Hi
If the car is parked and used every so often no problem, only is a problem when spraying water or it rains and I get caught out.
Blower is slow even at 4 so will check. Still not sure where water is getting into the vent system.
Thank you.
Mike

 

[zrcg1]

Hi Mike,

" Blower is slow even at 4 so will check."

Sounds exactly like the aux blower is not running.........!!

Condensation builds up in the front air vent (below the wipers at the base of the bonnet). If your fans are only working in slow mode they will not clear the condensation.

This sounds exactly like the problem I describe above. Also, check the front rapid demist is working. This runs extremely fast to the point where its too noisy. Again, if the aux blower is not functioning it runs in slow speed, to the point where its useless.

If it is the rear fan, the fuse is obviously an easy fix, the relay can be tested by swapping it temporarily with one of the relays used for air con or the oil cooler fan.They are exactly the same part number. - If its the fan motor, a new one is fairly expensive £200+ I believe.

Just for clarification, the cause of the problem is that the front fans are running in "restricted" mode due to the fact the rear aux blower is not running. The rear blower wont directly contribute to the problem.

Chris

 

[Guest]

Thank you will check this evening!

 

[Guest]

Chris Hi
Hope you had good Christmas. Eventually checked in Sept all fuses and got a friend with his meter and we cheched ALL relays and all ok, guess that leaves the fan motor.
You were right little or no air and no sound from the back when switched on, no demist to speak of also.
Do you have any idea how to check the fan motor yet alone where it is. My days of rebuilding and swapping V8's were all based on easy managable parts with plenty of space. Saw someone advertising a 993 manual on CD for £50.00 in one of the mags.
Cool Yule
MikeyD

 

[Guest]

PS Unsure why my listing shows non member?

 

[Guest]

Is this the one?
http://www.type-911.co.uk/images/general/964fan.jpg

 

[Porker993]

Mikey can you check under the carpets ? I mean underneath the thick foam sound proofing in the footwells which soaks up and retains gallons of water like a sponge.
It's quite a fiddle but it's worth it. If the foam is wet it'll all need to come out to dry. You shouldn't be getting that much condensation, whether the fans work or not.

 

[jboult]

I just had exactly the same problem with my '96 Targa, which was getting worse. I'd noticed the occasional drip coming in (particularly during the recent bad weather), but even so I was very surprised to find just how much water had collected in the underlay. It wasn't quite sloshing around, but pressing on the foam caused puddles to appear, and the carpets needed wringing out.

I've had all of the carpets out to dry, and a heater on in the car over the weekend to dry the underlays out - and even so they're still a little damp!

The drips are coming from the front of the Targa roof, so if anyone has any tips on how to stop this I'd be more than grateful. The car is used every day, so it's a little difficult to avoid the rain...

Cheers/John

 

[ja197]

Hi

I've recently got my 993 and have to park it outside. Since then I've had the steaming up problem too. All fans and AC working fine but the underfloor sound deadening etc was soaked and its still drying out in the house! I found water coming in around the sponge ventilation/heating pipe gasket at the bulkhead pentration below the screen/dashboard. Is this common? I have managed to get it to seal better but water is sitting on the outside and not draining away (below the fan under the scuttle). Have you checked that area too?
Can anyone else tell me if that area should drain properly and where the water is getting in? I don't think its the screen seal.

Thanks

James

 

[AndyD]

Mine does the same.....

Thought it was coming from the leading edge of passenger door as been known to leak when washed but does now look like coming from leading edge of targa roof as i get wet when starting out - any easy fixes??

 

[ja197]

Hi, sorry don't know much about the Targa roof I'm afraid.

 

[jcslater]

A definate theme here. The post by ja197 got me thinking and I have exactly the same problem with water collecting & coming in through this sponge gasket. I spent quite some time trying to find the source of this leak and changing door lining etc made no difference. Well, I'm very happy to have found the source but now can anyone help solve this leak. How do we unblock the drainage from the skuttle & resolve the issue? Help is very greatly appreciated.

 

[TRW40]

I have a targa. I don't have water coming into the car but I have been investigating a bubbling noise at high speed. I now know what is happening - if you look at a targa roof there are two channels between the flip up visor at the front of the roof and the windscreen. These run under the windscreen seal which allows water off the roof to run under the seal and around the windscreen aperture. It then collects at the bottom of the aperture between the windscreen and the scuttle. I am getting it checked out by my specialist but there really should be a drain which takes this water away. I suppose there may be one which is blocked but without removing the seal it is difficult to check. I guess this is a problem across the 993 range - ie water getting under the seal and cannot drain away - perhaps that is why so many need the scuttle dealt with?!