So this problem started yesterday. When I try to cut on the fan and drive with the windows closed, the fan for some reason wont blow any air out, but what's strange is that it will blow air when the car is traveling at highway speeds, but here is another weird thing, it only blows air when the sunroof is cracked open or fully open, but as soon as it fully closes the air stops blowing....I've never heard of something like this happening...any thoughts...??

 

sounds like something might be clogged.
drop your glove box and check it out.

 

you could also check by popping the hood and removing the cowl. check on the pass. side that is where the opening is.

 

hey thanx yellowxhoodie

 

no prob.
post up if you find anything, im curious.

i remember my drain plug under my cowl got plugged in my cadillac and caused all the water to seep into the pass. side of the cabin.

carpet was soaked, took me like 2 days just to vacuum it all out and blowdry it. lol

 

yea, I had 98 Altima before this car and it did the same thing you just described except that water happened to drip down on the ECU and fried it Having the ECU going haywire on a car while your driving it is like trying to get a human vegetable to walk...it was horrible.

 

Your fan motor isn't working, or just not working as well as it should. The vents will open like they should when you switch between the different settings, but the fan isn't blowing air. The air you feel is blowing in because your speed is forcing air through your ductwork. That's why the windows have to be open. Check your fuses, and if that's not the problem, you might have to get a new fan.

 

Hey, yea I think it's the actual fan motor that isn't working. Even when you put the fan on full blast (or at least when that's what it shows on display), unless your traveling at highway speeds, and the sunroof is open the fan doesn't work. Now I did have some suspicion of the fuse because when your sitting at a dead stop and you turn the fan completely off, then turn it back on again, if you listen closely you can hear a sort of click sound near the drivers side vent, but I'm thinking maybe it's coming from the fuses...I'll have to see what the deal is tomorrow..

 

I had a Grand Prix that did the same thing. I was leaking water into the fan motor, and it rusted the bearings, then the motor burned up. You can find the fan behind the glove box in our car. There's also a rubber hose that runs out of the floor board just to the left of it. Be sure to check it for any problems. It's what your condensation from your ac runs out of. I hope this helps you out.

 

After you fix the fan problem you should really do the cabin filter DIY. I did mine about 6 months ago, and I pulled it out to check it the other day, and to my suprise it was packed full of pine needles and dust (I park under I giant fir tree) I couldn't believe in such a short amount of time I could collect so much junk in the filter and how much of that stuff made it past the little mesh screen up front. So I could only imagine how bad it could be for the components after a few years

 

I thought our cars didnt come with a cabin air filter, I thought that was something you had to put in yourself? Because I havent put one in since I've had the car

 

Hey guys I wanna replace the fuse because that's what I think it might be, where would I have to get it from, and actually I dont think it's a fuse, it looks more like a relay. Would I have to get it from the dealership?

 

Autozone carries them as do other parts stores.......

 

This is the article for a DIY on the cabin air filter for future reference.

https://www.scionlife.com/forums/tc-tech-diy-1818/cabin-air-filter-homemade-51431/

 

ok so I got the glovebox down and took the cabin air filter out, which was by the way filthy...and I see that the fan is getting juice going to it. What happens is I can get the fan to turn if I stick my finger down in there and start it with my finger, but if you shut the car off, or the fan for about a second and let the fan completely stop, it wont start back turning on it's own again...this is frustrating. I tried spraying compressed air down in there just in case there was something caught that might be preventing the fan from turning. I even sprayed WD40 in there and that still didnt help...does this mean I need a whole new fan??

Here are some pics below

 

apparently scion's dont come with the cabin air filter installed, I had my oil changed this weekend and they told me about it and that I needed one and wanted to put one in for me for fifty bucks. I figured if it wasnt with the car when I got it then it wasnt critical. I read my maintaence book when I got home and they dont even mention a cabin air filter, then I came to his site and learned more than I ever wanted to know about them. Heard you can buy them at Napa Parts but I think I am going to do the Home depot thing and make my own as I am interested in seeing if its true about how much dirt it will collect. I figure its scions version of a hepa filter.

 

Wow they wanted to charge you $50 to install that thing??? That's insane, it only took me 2 minutes to take the glove box out and get to it. I dont know the filter that was in there came with the car from the factory or not, it definitely looked like it wasn't something someone just made. But after looking at all the crap that was inside that thing I would say DEFINITELY put one in your car, because that thing was FILTHY. But then again my car has just under 149,000 miles on it 2....