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Stupid intermittent fault No. 1.

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Old 16 February 2014, 05:20 PM
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alcazar
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Question Stupid intermittent fault No. 1.

Condensation in the car!

The interior/carpets/mats/seats show no sign of damp.
The boot is bone dry, even the spare wheel well and side wells.

Some days the car is fine, others, like today, when the sun has been on it and has now gone down, leave a thick layer of condensation on the windows.

I understand the mechanics/physics of it, but what I'd like to know is: WHERE'S IT COMING IN???
Old 16 February 2014, 05:22 PM
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tubbytommy
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is it the rubbers around the windows, mine always used to steam up when it had been washed and on opening the doors the rubber was always wet around the glass.
so i assume its the same if its been sitting in the wet.
Old 16 February 2014, 05:30 PM
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Originally Posted by tubbytommy
is it the rubbers around the windows, mine always used to steam up when it had been washed and on opening the doors the rubber was always wet around the glass.
so i assume its the same if its been sitting in the wet.
I have this, Ive tried spraying the rubber with wd40, didnt help, is there any way to stop it happening?
Old 16 February 2014, 05:33 PM
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Check the little slider on the heater controls so it is set to air through
the car as opposed to circulating if that makes sense.

I had the same thing with my classic and a simple slide of the switch
sorted it.
Old 16 February 2014, 05:49 PM
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Originally Posted by Raptorman
Check the little slider on the heater controls so it is set to air through
the car as opposed to circulating if that makes sense.

I had the same thing with my classic and a simple slide of the switch
sorted it.
Yea this, a passenger moved mine to circulating and for a few days i couldn't figure out why the car all of a sudden was full of condensation when leaving work etc, eventually i noticed the position of the switch, and it was problem solved once i'd flicked it back to air through the car
Old 16 February 2014, 06:08 PM
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The rubbers seem to seal well, in fact a small amount of condensation sometimes gather in the tiny trough in the centre under the glass, esp. after rain/washing .

The recirc slider was the first thing I checked and it's set to allow in fresh air.
Old 16 February 2014, 06:12 PM
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Do you use the car as a daily driver or just occasional
use?

Trending Topics

Old 16 February 2014, 06:29 PM
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VERY occasional, since I started resenting putting fuel in it.

But it's parked in the open air, sadly.
Old 16 February 2014, 06:37 PM
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as others have said - recirc being selected can be a cause
Old 16 February 2014, 06:39 PM
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Originally Posted by alcazar
VERY occasional, since I started resenting putting fuel in it.

But it's parked in the open air, sadly.
My guess is because its not being run regularly it is naturally
producing condensation which won't go away unless the car has
a good run and time to warm through thoroughly.

I work a four on four off shift pattern and if I didn't use the classic on
my four off it would start to condensate. No issue with the bugeye though.
Old 16 February 2014, 07:19 PM
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riidaa: recirc is set to allow fresh air in, it was the first thing I checked.

Raptorman: how can it produce condensation naturally? From where?

Condensation relies on their being enough moisture in the atmosphere to condense on the glass when the temperature falls. yet the inside of the car is, apparently, dry.

And yet, leave it in the sun all day, when the temperature falls, there is the condensation again.

So the moisture must be present....but where is it?

I've even checked UNDER carpets: dry as a bone.
Old 16 February 2014, 07:36 PM
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Originally Posted by alcazar
riidaa: recirc is set to allow fresh air in, it was the first thing I checked.

Raptorman: how can it produce condensation naturally? From where?

Condensation relies on their being enough moisture in the atmosphere to condense on the glass when the temperature falls. yet the inside of the car is, apparently, dry.

And yet, leave it in the sun all day, when the temperature falls, there is the condensation again.

So the moisture must be present....but where is it?

I've even checked UNDER carpets: dry as a bone.
Ok, car is sitting in sunshine so it gets reasonably warm inside due to
all the glass windows, now when the sun goes down the temperature
drops quite quickly (its winter)meaning that condensation will occur.

When I bought the bugeye the classic sat next to it un driven and
within a week all the windows were condensated.

Just my opinion of course.

Last edited by Raptorman; 16 February 2014 at 07:42 PM.
Old 16 February 2014, 07:50 PM
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I am assuming the car in question is a classic? If so you say you have checked under
the carpets and they are dry, have you checked the rear inner wings where the jack
is stored as water can leak in there?

Just pop the jack cover off and stick your hand in as far as you can.
Old 16 February 2014, 07:53 PM
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marco58
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Had the same with my car and I traced it down to the plastic sheet behind the door card mine were split and let a small amount of water in and onto the back of the door card which made them damp but did not show on front side,fitted new ones problem solved.Hope this helps and its the same thing
Old 16 February 2014, 07:55 PM
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and while you are at it, clear out the gutter tray below the wipers. Bet some moisture is seeping in there



My classic never steamed up. Had a new windscreen in a few months ago and now it has more condensation than before so I blame the poor seal
Old 16 February 2014, 08:12 PM
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Originally Posted by Raptorman
Ok, car is sitting in sunshine so it gets reasonably warm inside due to
all the glass windows, now when the sun goes down the temperature
drops quite quickly (its winter)meaning that condensation will occur.

When I bought the bugeye the classic sat next to it un driven and
within a week all the windows were condensated.

Just my opinion of course.
It's this and nothing more. My Volvo does it if I don't use it for a few days. The air inside the car is static and not being changed which makes it worse.

This will solve the issue:

Bell Moisture Mate

Normally used for caravans and the likes as they are shut up for long periods.
Old 16 February 2014, 10:41 PM
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Had this problem in the 911. Bloody thing.

Only thing that worked was one of those moisture boxes.
Old 16 February 2014, 10:58 PM
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Originally Posted by Raptorman
Ok, car is sitting in sunshine so it gets reasonably warm inside due to
all the glass windows, now when the sun goes down the temperature
drops quite quickly (its winter)meaning that condensation will occur.

When I bought the bugeye the classic sat next to it un driven and
within a week all the windows were condensated.

Just my opinion of course.
What sunshine I haven't seen the son in months
Old 16 February 2014, 10:58 PM
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Originally Posted by f1_fan
It's this and nothing more. My Volvo does it if I don't use it for a few days. The air inside the car is static and not being changed which makes it worse.

This will solve the issue:

Bell Moisture Mate

Normally used for caravans and the likes as they are shut up for long periods.
B&M do the same things for 89p.
Old 16 February 2014, 11:33 PM
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Originally Posted by The Trooper 1815
B&M do the same things for 89p.
Old 17 February 2014, 02:40 AM
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Originally Posted by alcazar
riidaa: recirc is set to allow fresh air in, it was the first thing I checked.

Raptorman: how can it produce condensation naturally? From where?

Condensation relies on their being enough moisture in the atmosphere to condense on the glass when the temperature falls. yet the inside of the car is, apparently, dry.

And yet, leave it in the sun all day, when the temperature falls, there is the condensation again.

So the moisture must be present....but where is it?

I've even checked UNDER carpets: dry as a bone.
I have same problem with mine. Sometimes so much condensation on windscreen the heaters can't clear it and I have to clear it with cloth. I can't find an apparent reason for this either
Old 17 February 2014, 07:33 PM
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Have you tried replacing the cabin air filter? Mine was beginning to steam up more regularly (it's always going to do it a little after leaving damp climbing gear in there overnight) and having found an improvement in my old Octavia got a new filter ordered from ebay for a fiver. Five minutes is all it took and the condensation is 99% improved. My old filter looked like the original so could easily have been ten years old and was just rammed full of dirt, dust and gunk that was trapping the moisture and not allowing it to dry out properly.
Old 17 February 2014, 08:38 PM
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Mine has had this problem from new (no damp floor/carpets) - I gave up trying for a solution. The moisture trap thingys didn't make any difference.

Car is sat outside and isn't used a great deal
Old 18 February 2014, 06:48 PM
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No cabin air filter, it's a classic.

I still don't see WHERE the condensation is coming from. It's moisture, so it must be IN the car. Whether as moisture or vapour, it must be there. Yet some cold days, no condensation, others: condensation.

How can that be?
Old 18 February 2014, 07:15 PM
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check your spare wheel well?
Old 18 February 2014, 08:12 PM
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Originally Posted by alcazar
No cabin air filter, it's a classic.

I still don't see WHERE the condensation is coming from. It's moisture, so it must be IN the car. Whether as moisture or vapour, it must be there. Yet some cold days, no condensation, others: condensation.

How can that be?
^^ mines the same!?
Old 18 February 2014, 09:06 PM
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Stick a jar of rice inside it

Mine has slight condensation in the garage as it only gets used once a week

I now leave the window open a bit to solve the problem
Old 19 February 2014, 12:33 PM
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Wheelwell, down the sides in the boot, under carpets, I've looked everywhere and it's bone dry.

And it's not just a bit, it's enough to utterly soak over twenty sheets of kitchen towel.
Old 19 February 2014, 12:44 PM
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Originally Posted by just me
I have this, Ive tried spraying the rubber with wd40, didnt help, is there any way to stop it happening?
Nobody follow this advice! WD40 will eat rubber seals.
What you want is Silicon spray.
Old 19 February 2014, 01:32 PM
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Originally Posted by alcazar
Wheelwell, down the sides in the boot, under carpets, I've looked everywhere and it's bone dry.

And it's not just a bit, it's enough to utterly soak over twenty sheets of kitchen towel.
Have you ever had windscreen replaced alcazar?


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