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Discussion Starter · #1 ·
On our vacation this summer, the blower motor resistor on our 05 odyssey went out. Thanks to these forums we were able to find the part and replace it with no problem and were back on the road in no time. However, after about 3 months the resistor went out again. Same symptoms. (No front blower) Warrantied the part and replaced it and it worked fine. Then two weeks later the resistor failed again. Obviously something is causing this resistor failure, but we are unsure what it could be. We would appreciate any ideas to try and fix the source of the problem. We have 170K and our Odyssey still drives great - we're not ready to trade it in just yet!!:)
 

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Are you replacing the failed part with OE Honda parts, or with Autozone cheapie stuff?

There are good aftermarket manufacturers, like Standard Intermotor, Beck/Arnley, etc that are literally OE parts in a different box, built to the original specs by the original suppliers.

If you van is *not* a Touring, the part number for a good one would be RU-438, expect to pay about $100-120.00 for the part.
 

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Discussion Starter · #3 ·
Thanks for the advice! But we used Honda parts from a dealership, and they were the ones that warrantied it for us. We just can't seem to figure out what would make this part keep going bad.
 

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Interesting, you might see how much of a draw the fan is pulling, perhaps it's overdriving the resistor?
 

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HeavyDuty is right.

The Blower Motor itself may be drawing too much current.
At 170K miles, it is a good idea to replace Blower Motor.
 

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It's my understanding that these things are generally put within the box so that the stream of air can cool them. Maybe you have low airflow from debris like leaves or an old cabin filter? Just a thought.
 

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Discussion Starter · #7 ·
I found the cabin filter that was right above the resistor and it was VERY dirty. I replaced it. Hopefully, that will end the problem. If it goes out again, I probably will check on replacing the blower motor. Thanks so much for your help!!!!
 

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I found the cabin filter that was right above the resistor and it was VERY dirty. I replaced it. Hopefully, that will end the problem. If it goes out again, I probably will check on replacing the blower motor. Thanks so much for your help!!!!
Interesting... Keep us updated.
 

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I found the cabin filter that was right above the resistor and it was VERY dirty. I replaced it. Hopefully, that will end the problem. If it goes out again, I probably will check on replacing the blower motor. Thanks so much for your help!!!!
GREAT point as most people tend to forget the Cabin Filter (out of sight out of mind kind of thing!).

This is also a great reminder for all kinds of cabin filters. When clogged, the air flow is severely restricted and the blower motor works much harder!

Time to check your furnace at home too! A clogged air filter is the #1 cause of blower motor failure, not to mention it can severely affect your Heat Exchanger. At home, I change my furnace filter every 30-45 days.
 

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For the basics. Is it a transistor as used in the EX or a resistor assembly as used in the LX. If resistor what is going out? This can be checked with an ohmmeter.
 

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HOW can I get to the blower motor resistor on my 2005 LX (should be the same),,,? I got the glove box out, one of the tabs broke while removing it... but thats not where it is. I need to get UNDER the dash, but there's a thin black plastic "tray" which has a thin what looks like a filter on it... I pulled down the forward edge of it, but I dont want to BREAK the rest of it out. How do I safely remove it to access the resistor? Or am I in the wrong place? A YouTube showed it being on the passenger side, under the dash, from the floor, up on the left against the firewall, up to just about even with the bottom edge of the glove box. Am I looking in the right place? How do I remove that thin plastic cover/sheet? TIA
 

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HOW can I get to the blower motor resistor on my 2005 LX (should be the same),,,? I got the glove box out, one of the tabs broke while removing it... but thats not where it is. I need to get UNDER the dash, but there's a thin black plastic "tray" which has a thin what looks like a filter on it... I pulled down the forward edge of it, but I dont want to BREAK the rest of it out. How do I safely remove it to access the resistor? Or am I in the wrong place? A YouTube showed it being on the passenger side, under the dash, from the floor, up on the left against the firewall, up to just about even with the bottom edge of the glove box. Am I looking in the right place? How do I remove that thin plastic cover/sheet? TIA
is that "cabin air filter" that you are seeing?
See you tube on how to replace honda odyssey cabin air filter.
 

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No, not from what I've seen on the "2005 cabin air filter" youtube. Looked like the glove box is removed, and the cabin air filter is a "cartridge" about an inch or two thick.

This is really a very thin sheet at the very UNDERbelly of that area, beneath/behind the glove box - accessible without removing the glove box - and extending all the way across the passenger side under-dash area. It's very flexible, and I easily pulled it down, but the front of it was still attached - I didn't want to break it off.

It has a very thin "filter fabric", like a few paper towels... ok that COULD be the cabin air filter. The youtube video for the 2005 odyssey blower resistor has a dashboard that doesnt match mine, so maybe the one I saw for the cabin filter was also the wrong vehicle. Un fortunately, that video starts either with this lowest "panel" already removed, or its a different vehicle.

Mine is a very basic model. I used to have an '01 or '02 Odyssey that had all the bells and whistles.

I still got conflicting info what the most basic one is... EX? LX? It doesn't even have electric back doors...

Thanks!
 

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You are probably talking about "D" which is the air filter HOUSING. Normally, LX model (probably what you have) does NOT have dust/pollen filter, BUT you can install it as tray is still there which is what you are seeing probably.

Below, it talks about undoing clips from "blower power transistor" Is this what you need to replace? Unfortunately, the manual does not go into specifics on how to replace the transistor.

If you want to remove whole blower motor unit all together, then you will have to CUT the plastic cover according to the manual.


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Actually, never mind the above posting. IF it is "blower motor transistor", then see the last highlighted part which is probably what you want to replace:

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