Blower Motor Upgrade (want FASTER air)

[Capncam]

Any way to upgrade the blower motor to move more air? I know I can block off vents to get more driver airflow, but I’m talking F250 amounts of air flow. Maybe it’s impossible, but I can’t find the question asked or answered before. Basically I’m asking if there’s a way to supercharge the blower motor to move more/faster air.

Texas is hot and I want my hair blowing in this bad boy.

TIA

 

[Inv4drZm]

Could try over-volting the blower motor though I'm not an electrical engineer I have no clue on how easy that is and I'm sure it would reduce it's lifespan. The speed should be controlled by a resistor so if you swap out the resister you might be able to get it to spin faster on all speed settings, maybe?

The blower motor might be a 'standard' size, could look online for something that is close to the same size but faster or try retrofitting a larger motor into the stock housing.

Of course make sure the rest of the AC system is working optimally so you can get the coldest air possible.

Other mods would be to use ceramic window tint and put up dashboard covers when parked.

 

[Inv4drZm]

Or maybe finding a smaller pulley for the AC compressor would be easier. Adding an electric fan right in front of the condenser would help with AC when the vehicle is stopped.

Also, take a garden hose to the condenser and radiator and wash out the dust and bugs.

 

[averyislost]

Yeah I just had a lot of my AC system rebuilt due to a leaky AC evaporator core. Got a new one of those, new expansion valve, blower motor taken out and cleaned out and everything else pressure tested with new refrigerant and whatnot. Also cleaned and scrubbed my condenser.

AC is still subpar compared to my 1999 4Runner with an AC that's never been serviced/opened up. The 3rd gen blower motor blows waaay harder than the 4th and it gets colder faster as well.

What helped my 4th gen was getting ceramic tint done all the way around (including windshield), and for kicks I also wrapped my AC cold line in rubber insulation. Not really sure it helped but the tint certainly made a big difference in how cold it would get on recirculate.

But yeah, the blower motor just isn't as good as other vehicles. Biggest thing is make sure your AC filter isn't clogged up and it's not one of those ultra-fine filter type.

Let me know if you find an aftermarket blower cause I'd be interested

 

[MikeinNH67]

Doubtful on a faster motor unless yours is worn out. Do make sure your cabin filter is clean as that will affect flow. Also try outside air vs recirc as I think the air moves faster on the outside setting.

As for the resister thought, these don't work that way. There's a little electronic board by the heater box that controls the fan. The dash switch sends a signal or maybe it's a specific resistance value and the electronics fire up the fan speed depending on the values, usually high is full on for most cars. This should mean that you can create more speeds if you have the know how. I'm not impressed with the difference between high and the next speed down which is why I researched the setup but changing my filter made it better.

One last thought, more fan speed may actually make the temp coming out of the vent warmer as it may be too much. So many variables.

 

[BlackWorksInc]

The blower motor in 4th gens is pulse width modulated by the HVAC control, no resistor. That being said, I do get what you mean there is a bit of ducting and angles that the 4th gen blower motor has to push through and there's more interior volume to cool down so it does feel rather lack luster.

This has been something I've been thinking about for a while, in terms of how to "overclock" the blower mirror and/or upgrade it to something that has a bit better flow. Will have to keep an eye on this thread, I'm a bit busy at work and have a big list of projects to tackle with the 4Runner and house, but when I catch up I'll try to see what I can think up.

 

[Bumbo]

With increased air speed... your AC will actually feel "less cold" provided you are "maxed" out on cooling capacity.

The end thermal result would still be the same... but at least your hairs blowin.

 

[Capncam]

Best bet sounds like figuring out if there’s a better blower motor avail for this thing. I got the tints, I got the clean filter, I got the recirc button pushed. I have an aftermarket blower motor from rock auto, oem one was rattling last year. I couldn’t tell a difference when I swapped them. Wonder if I could junkyard a sequoia one and see if it fits. Bigger car and more vents=more air?

 

[-E5J-]

If the AC is working as designed, and you just want more air blowing on you, in your face, etc., maybe simple is better… how about a small, plug in 12 volt DC fan to blow directly on you? Maybe even two of them to move the cold air around the cabin? Just a thought…

 

[UURunner]

Yeah I just had a lot of my AC system rebuilt due to a leaky AC evaporator core. Got a new one of those, new expansion valve, blower motor taken out and cleaned out and everything else pressure tested with new refrigerant and whatnot. Also cleaned and scrubbed my condenser.



AC is still subpar compared to my 1999 4Runner with an AC that's never been serviced/opened up. The 3rd gen blower motor blows waaay harder than the 4th and it gets colder faster as well.



What helped my 4th gen was getting ceramic tint done all the way around (including windshield), and for kicks I also wrapped my AC cold line in rubber insulation. Not really sure it helped but the tint certainly made a big difference in how cold it would get on recirculate.



But yeah, the blower motor just isn't as good as other vehicles. Biggest thing is make sure your AC filter isn't clogged up and it's not one of those ultra-fine filter type.



Let me know if you find an aftermarket blower cause I'd be interested

How do you find the AC filter to check


Sent from my iPhone using Tapatalk

 

[AuSeeker]

How do you find the AC filter to check


Sent from my iPhone using Tapatalk

The AC filter is also known as the "cabin filter" it's located behind the glove box, look in your owner's manual for "air conditioning filter" and it will tell you how to change it.

Walmart usually sells replacements or any auto parts store.

Many people never even knew that there's a filter behind the glove box, most find out about it and they finally check it find to it not only clogged but has leaves, acorn nuts, twigs, etc and in some cases even rat or mouse nests on top of it!!

When I bought my 2004 in 2016 the previous owner obviously never checked or change the filter, I found about 20 to 30 acorns as well as numerous insects, leaves, etc. on top of the filter when I changed it the day after I bought it!

Let us know what you find in there!!!

 

[Bluesky 07]

How do you find the AC filter to check


Sent from my iPhone using Tapatalk

This video explains where it is and how to change it. Moneysaving tip: cabin filters are expensive for what they are. An alternative is to buy the larger kind of furnace filter made for houses and simply cut it down to the appropriate size. This will get you several replacements for the same $ you'd spend on one that's made to fit. Just be sure you have it oriented for proper air flow direction.

<iframe width="560" height="315" src="https://www.youtube.com/embed/XIKhMbud_-0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

 

[ZBrewski]

The easiest route is to buy a 12 volt plug in fan. Here's the one I bought on Amazon. Its a little loud but works well.

Car Fan 12V Automobile Cooling Fan for Backseat, Portable Cigarette Lighter Plug Car Seat Fan 360 Degree Dual Head Rotatable with Stepless Speed Regulation for SUV, RV, Van, Vehicles
https://a.co/d/2oUnHpd

 

[Txstick]

This one works well.

Amazon.com

 

[ChrisMich28]

this thread was for a 3rd gen 4Runner, not a 2004

why did people don't read, and started talking about a different gen 4runner.





After installing the new cabin filter for the 3rd gen 4Runner, the air blows slowler than before, and that is the cabin air filter is restricting the air flow.

Has anyone here experienced the same? and how did you fixed?????

 

[AuSeeker]

this thread was for a 3rd gen 4Runner, not a 2004

why did people don't read, and started talking about a different gen 4runner.





After installing the new cabin filter for the 3rd gen 4Runner, the air blows slowler than before, and that is the cabin air filter is restricting the air flow.

Has anyone here experienced the same? and how did you fixed?????

First and foremost I have read that 3rd Gens T4Rs didn't have a factory cabin air filter, but I don't own one so what do I know, but this is what a web search says as well.

https://www.google.com/search?q=3rd+gen+4runner+cabin+air+filter+location&sca_esv=5b00ba422ed1d2b3&rlz=1C1VDKB_enUS1069US1069&sxsrf=AE3TifMRtBIgW2kx410BAbNkLkFFKad8Fw%3A1755475788127&ei=TG-iaOHKB-fIp84P7ZyE2Ac&oq=3rd+gen+4runner+cabin+air+filter&gs_lp=Egxnd3Mtd2l6LXNlcnAiIDNyZCBnZW4gNHJ1bm5lciBjYWJpbiBhaXIgZmlsdGVyKgIIADIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYRzIKEAAYsAMY1gQYR0jsDlAAWABwAXgBkAEAmAEAoAEAqgEAuAEByAEAmAIBoAIDmAMAiAYBkAYIkgcBMaAHALIHALgHAMIHAzAuMcgHAg&sclient=gws-wiz-serp

The OP never stated 3rd or 4th Gen but he has a 2004 4th Gen listed in his signature and even has a photo of a 4 Gen, so that is the Gen everyone has given advice about.

Also this topic is in the 4th Gen forum section so that in itself make this about a 4th Gen, I'm not sure where you read is was about a 3rd Gen???

Maybe you should repost somewhere in the 3rd Gen forum section.