Water in fan housing
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Water in fan housing
My 850 was stationary for a few months (parked out in the open). I removed some mould from the interior afterwards, thinking it was normal moisture in the vehicle. However two weeks later after drying the car the mould was back and I noticed the passenger footwell was soaking wet.
I found that it's usually the heater core leaking but this was NOT the case this time. I pulled the dashboard cupboard in search of the leak and noticed water dripping from the interior fan. I checked the evaporator drain, which was clear. Then I pulled the fan and discovered water trapped just below it in the housing, the HVAC cover is lower here so the water doesn't flow towards the drain. I cleared the water, thinking it had build up in the time the car was unused, but it was back in a night.
After some twists and turns I discovered water leaking in just above the air recicling valve (big, rectangular, black, plastic door behind the interior fan, visible when you remove the fan). I had cleared out two drainage hoses a few weeks before, leaving the gutter below the window bone dry. So I was a bit puzzeled until I discovered two more hoses, one on each side. One is supposed to drain the area around the fuse box below the hood, which it did when I cleared it. The other clears a low lying area above the HVAC cover on the passenger side, just below the gutter under the windshield. I stuck a flexible tube in there and about a liter of water came pouring out when I cleared the blockage. This solved the leakage of water inside the vehicle. So if you're dealing with a wet floor inside an 850 or similar it is not always the heater core, if it's regular water on the carpet then it's probably a blocked drain somewhere.
BONUS - The A/C wasn't working, pulling the blower fan out gave me the oppurtunity to test it (connect it to the car battery straight away, being careful since it might start spinning, it worked). Furthermore pulling out the glove compartment I found a loose relays behind it (purple, relay 503), pushed it back in and now the AC works again. Coincidence? I think not!
I found that it's usually the heater core leaking but this was NOT the case this time. I pulled the dashboard cupboard in search of the leak and noticed water dripping from the interior fan. I checked the evaporator drain, which was clear. Then I pulled the fan and discovered water trapped just below it in the housing, the HVAC cover is lower here so the water doesn't flow towards the drain. I cleared the water, thinking it had build up in the time the car was unused, but it was back in a night.
After some twists and turns I discovered water leaking in just above the air recicling valve (big, rectangular, black, plastic door behind the interior fan, visible when you remove the fan). I had cleared out two drainage hoses a few weeks before, leaving the gutter below the window bone dry. So I was a bit puzzeled until I discovered two more hoses, one on each side. One is supposed to drain the area around the fuse box below the hood, which it did when I cleared it. The other clears a low lying area above the HVAC cover on the passenger side, just below the gutter under the windshield. I stuck a flexible tube in there and about a liter of water came pouring out when I cleared the blockage. This solved the leakage of water inside the vehicle. So if you're dealing with a wet floor inside an 850 or similar it is not always the heater core, if it's regular water on the carpet then it's probably a blocked drain somewhere.
BONUS - The A/C wasn't working, pulling the blower fan out gave me the oppurtunity to test it (connect it to the car battery straight away, being careful since it might start spinning, it worked). Furthermore pulling out the glove compartment I found a loose relays behind it (purple, relay 503), pushed it back in and now the AC works again. Coincidence? I think not!
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