Toyota Prado150 engine noise

[TLC150]

Hello

Has anyone had a similar sound in the engine compartment of the Prado150 and found the source of that sound?

Sounds like the squeaking of rubber or the sound of pressure leak. Mine does it every now and then but not every time, mostly with cold engine and when accelerating.

The alternator belt was already replaced with a new one, because I thought that maybe it would slip. The rollers and tensioner are checked also and OK, so there is no sound from there.

I found link to a video where someone has had a similar issue, at least the annoying sound is same:

Anyone have ideas, pressure hoses, vent valve, ...?

 

[r2m]

Where are you hailing from? Most of the folks that post here are north American (Canada or U.S.) with the Lexus GX460. And considering that you have a Prado, you probably have an engine with fewer cylinders, so I'm not sure your particular issue would apply to our engines. So, in short I'm not sure if the GX460 crowd will be much help. But it's worth a try!
BUT... there are a few Prado 150's on this site, not many but some. There is one fellow from Sweden who posted recently. You may want to reach out to those folks.
If you don't get a response in a few days, bump the post to restart it again to give people who aren't on here all the time to maybe catch your post.
Just a thought. Good luck!

 

[m1ci]

Hello

Has anyone had a similar sound in the engine compartment of the Prado150 and found the source of that sound?

Sounds like the squeaking of rubber or the sound of pressure leak. Mine does it every now and then but not every time, mostly with cold engine and when accelerating.

The alternator belt was already replaced with a new one, because I thought that maybe it would slip. The rollers and tensioner are checked also and OK, so there is no sound from there.

I found link to a video where someone has had a similar issue, at least the annoying sound is same:

Anyone have ideas, pressure hoses, vent valve, ...?

Did you find solution? I have the same sound as in the video. Only when cold engine. When worm there is no noise. Any fix? Thanks!

 

[chipsterguy]

Sounds like a vacuum leak of some sort. Brake accumulator?

 

[m1ci]

Sounds like a vacuum leak of some sort. Brake accumulator?

It seems it is related to the fuel system. Probably sound from the injection fuel pump.
This happens only on cold engine, when then engine warms up (70C+) the sound goes away.