Author Topic: Cabin blower motor - location/removal  (Read 1877 times)

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Offline red_imps_2003

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Cabin blower motor - location/removal
« on: April 05, 2018, 05:13:52 PM »
I would like to get to the fan/blower motor that blows the air into the cabin. Lately it has been persistently sounding like a piece of paper on moving bicycle spokes so there is either a foreign body in there or a broken component (I suspect the latter, as the sound is consistent suggesting it is fixed in place rather than something loose rattling around).

There are three or four clips on youtube that display a similar sound and people seem to think it is the air intake actuator (there are instructions for accessing and replacing said actuator at http://sidesonic.blogspot.co.uk/2015/05/mazda-3-bl-hvac-air-actuator-replacement.html). In most of those cases the noise seems to cease after a short while or when the recirc function is activated, which makes sense if the fault is in the actuator. As my noise does not change or go away whatever I do (apart from increasing/decreasing with the fan speed) I suspect it is more likely to be in the fan itself or the motor that powers it.

Does anybody know which side (driver's or passenger's) the blower motor is accessible from? The instructions above are for a model with the wheel/pedals on the left and glove box on the right. Does that mean I should be able to get at it from the passenger side? I suspect this may be one for a mechanic but thought I might have a poke around first just in case.

Edit: if the instructions at http://www.mazda3tech.com/blower_motor_removal_full_auto_air_conditioner_-1444.html are anything to go by it may be a bit beyond my level (!!!).
« Last Edit: April 05, 2018, 05:25:34 PM by red_imps_2003 »
So I was stood there trying to work out why the cricket ball was getting larger and larger...and then it hit me.

Offline EdMan

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Re: Cabin blower motor - location/removal
« Reply #1 on: June 22, 2019, 06:49:51 PM »
Hi. Any chance you got this issue figured out? Mine is doing the same and I'm struggling to find any info on this issue.

Thanks

Offline red_imps_2003

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Re: Cabin blower motor - location/removal
« Reply #2 on: June 22, 2019, 07:29:26 PM »
I'm afraid I didn't. It sorted itself out eventually. I think whatever piece was loose eventually broke off. I did take the central vents out of the dashboard, which is easy enough to do, but couldn't see much down there to determine where the sound was originating from. I still don't know what the actual source of the noise was but in my mind's eye it was from a loose blade of the fan rather than the actuator that diverts the flow of air between the various vents.
So I was stood there trying to work out why the cricket ball was getting larger and larger...and then it hit me.

Offline amar1994

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Re: Cabin blower motor - location/removal
« Reply #3 on: Yesterday at 02:14:37 PM »
Try to record it and post it here :)

If your blower is broken,I'm afraid that your entire dashboard needs to be dismantled to even get to it..

I got lucky with mine because it's LHD,but those 3 images can give you idea how ******ty that job is.Only let authorised dealership to work on it.




Offline red_imps_2003

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Re: Cabin blower motor - location/removal
« Reply #4 on: Today at 01:13:16 PM »
Aye; I saw a take-down video of the Mazda3 dash when I first started looking into this and it didn't half look a faff. I will take it in somewhere if any noises ever become too much to bear.

Thank you for the pics, though. It is interesting to see what the dash is concealing.
So I was stood there trying to work out why the cricket ball was getting larger and larger...and then it hit me.

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Re: Cabin blower motor - location/removal
« Reply #4 on: Today at 01:13:16 PM »