My 2004 LX470 has nearly 120k miles on it and 5k miles or so ago I began to hear an intermittent chirping / screeching sound coming from the front passenger foot well area when the HVAC fan / blower was on and the noise has become more frequent since, although still intermittent. Below are some pictures of the referenced area. What is going on and how can it be fixed? Thanks!
HVAC Fan / Blower Chirping / Screeching Sound
- Thread starter dbs600
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Hard to judge just what's going on from your description of the noise, but it's possible that you have something stuck in the fan itself. It's not uncommon for debris to find its way down in there.
In your first picture, the round black assembly is the fan and motor. Unclip the plug with the blue and white wires coming out of it, and then unscrew the 3 or 4 screws holding it to the bottom of the duct. The assembly will usually pop free under it's own weight (and it's a little heavy), so don't have your head right under it as you're taking the screws out.
Use one hand to support it as you remove them.
Pull it out and give it a once over - anything in there will be readily apparent.
In your first picture, the round black assembly is the fan and motor. Unclip the plug with the blue and white wires coming out of it, and then unscrew the 3 or 4 screws holding it to the bottom of the duct. The assembly will usually pop free under it's own weight (and it's a little heavy), so don't have your head right under it as you're taking the screws out.
Use one hand to support it as you remove them.Pull it out and give it a once over - anything in there will be readily apparent.
- Thread starter
- #4
Fuzz: Thank you for your prompt and informative reply! Much appreciated and I will attempt same this weekend.
E: The only thread I came across is this one: https://forum.ih8mud.com/100-series-cruisers/256489-squeaking-heater-fan.html. Any insight on search terms to find the one you're referring to?
Thank you again!
E: The only thread I came across is this one: https://forum.ih8mud.com/100-series-cruisers/256489-squeaking-heater-fan.html. Any insight on search terms to find the one you're referring to?
Thank you again!
Search "fan noise" specific to the 100 section. Pretty easy.
https://forum.ih8mud.com/100-series-cruisers/371906-noisy-climate-control-fan.html
https://forum.ih8mud.com/100-series-cruisers/498757-wonder-why-100-c-fan-making-weird-noise.html
https://forum.ih8mud.com/100-series-cruisers/371906-noisy-climate-control-fan.html
https://forum.ih8mud.com/100-series-cruisers/498757-wonder-why-100-c-fan-making-weird-noise.html
Its possible that the fan motor/bearings are going out, making the noise. Is there any way you can power the fan while out of the duct to check?
I don't recommend hooking up the plug and running the fan while it's unscrewed from the housing (just for safety reasons), but finding a way to power it while unhooked would probably be the fastest way to confirm/rule out the fan as the source of the noise...
I don't recommend hooking up the plug and running the fan while it's unscrewed from the housing (just for safety reasons), but finding a way to power it while unhooked would probably be the fastest way to confirm/rule out the fan as the source of the noise...
Most of my cruisers the fan is history at about 125000 miles. MIke
Check it before you replace it.
Part of the problem is that the problem is intermittent.
Does anyone know how much this part usually goes for?
Thanks.
You need to isolate the problem before you go throwing money at it, but if you confirm that it's the fan assembly PM CDan or Beno. They are the 'Mud parts guys and give a discount to mud members for OEM stuff. They work at American Toyota in NM.
