anto1150

Hi all, I know it's normal having mist when driving on rain, but in my car it gets suddenly very worse (you can actually feel the vapour through the heating system) if I drive through puddles. Could it be that some water finds it's way in the heating system (eg. heat exchangers)?
Am I the only one having this issue?

Ciao

Rocket Rob

In heavy rain, the engine cooling fan will ingest water. I normally turn on my AC and direct the air towards the windshield whenever its raining. If I don't, I get some fogging on the inside of the windows. Have you tried that? Note: I also turn on my rear defroster so that my heated mirrors turn on to keep them clear in the rain.

koenig_roland

some leaks? I had some problems with a not perfect sitting air duct instead the vent in the engine department. Possibly some leaks in the hoses from heat-exchanger to the cabin?

Solution: http://www.heatedwindscreen.com/acat...ndscreens.html

quite cheap!

i`m thinking about a heated windscreen for my coupe too.

ThomasC2

You haven't activated the "air re-circulation button" on the CCU by mistake? Then it gets worse in damp conditions.

Thomas

anto1150

Rob and Thomas,
Yes I do averything to prevent mist on the windshield! And it actually works quite well, but I keep wondering why the humidity increases suddenly when driving on puddles...?

I guess Koenig's suggestion might be something to check...!

Thanks mates!!!

anto1150

Rob,

I wonder if it may suck more water on puddles...even at low speed...

Rocket Rob

Have you tried inspecting the hoses and connections to the rear heater blower? Are they reasonably tight? I wouldn't expect much water to get into your heater from a puddle. I've never noticed that on my cars.

And thinking about this more, the water would have to turn 90 degrees from the fan to go to the engine blower. While some extra humidity might do this, the majority of any splashed water would go by the engine blower and blower across the engine cylinders and heads and then out the bottom of the engine.

anto1150

Rob,
I'll definitely give a thorough look under there one of these days and update the thread

jevvy964

The engine blower motor to engine tin pipe join can often be over tightened causing a kink in the blower to tin plastic pipe, perhaps the gap is big enough to let in a bit of damp during yr puddle jumping?

The kink is often hidden in the lhs of the join at 9 o clock looking from the back of the car.

espanolie

My 993s are spoiled - they don't know what rain is