Engine pulley/serpentine belt chirping noise

[Nettle]

I have a bit over 35,000km on my Tacoma and since about 29,000 I have heard an intermittent chirping sound. I've taken it to the dealer twice and they said they couldn't find anything wrong nor could they hear anything. There are times when this sound is very quiet and occasionally it is extremely loud as if a bird was chirping. I cannot reproduce this sound as it happens completely randomly. Today I popped the hood and ran the car for a while to see if I could hear where it was coming from. I couldn't hear a single instance of a very loud sound but I did hear what sounded like a very quiet sound emanating from the pulley/serpentine belt system. Has anyone else noticed this or had this issue?

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[cowboypep]

Does it chirp with the AC system turned off?

 

[Drifte]

Mine does this every startup it seems. IDK if the alternator and a/c are all immedietely loading up the engine and cause a little belt slip? Annoying for a brand new truck though.

 

[maxx075]

Mine does this every startup it seems. IDK if the alternator and a/c are all immedietely loading up the engine and cause a little belt slip? Annoying for a brand new truck though.

Normal. Search the forum and you'll find this all over the place. Mine does it as well.

 

[Drifte]

I also just happened to be watching this tacoma exhaust video, and his does it at start up as well. Heres a time-stamped link to that video for reference.

 

[boostnonu]

Change the belt.

 

[izzy]

Modern Toyota warranty means you gotta wait till the belt or AC clutch fails entirely and nukes a bunch of other parts, then have it towed to the dealer.

"It makes a weird sound, check it out. I have an idea of what it is."

-Dealership keeps truck for a week-
"Cannot reproduce issue, charge cust diag"

If it's towed in after the AC clutch seizes and the belt is sitting on top of the valve cover they'll fix it right away

They can't hit you with neglect cause "I had no idea it wasn't supposed to make that sound, so I just kept driving it."

 

[cowboypep]

I took my truck into the dealer for this chirping and they replaced the entire AC compressor under warranty. Which did make the noise go away initially. But a few months later it is now back

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