1HD-FTE engine squealing (1 Viewer)

[Shinook]

Hi folks. New HDJ101 owner here! I drove the car back yesterday and noticed this very rare, inconsistent, periodic squealing sound coming from the car. It happened maybe 3 times for 2 seconds or less the entire 3 hour trip, once at idle and the other two at highway speeds. I went to start the car this morning and it continued doing it at idle. Car was cold, outside temp was ~40f.

Here is a video:



Any thoughts on what this might be?

Thanks!

 

[Shinook]

As a followup - It went away when the car got up to temperature and hasn't shown back up, but I had ~1min of ABS alarms going off, so I'm assuming this is the booster pump/mc and not engine related.

Anyone able to comment that's heard that sound before?

 

[yannrg]

Hello, first at all try this : First on the morning, open your engine bay ,then you must go putting in ACC mode, then at this moment the "Power Brake pump" will start doing some relatives checking and of course that little motor will start a sound, but i'm pretty sure it will sound like a chirp or something when carbon brushes has been worn , in that case , the possible solutions are : rebuilt electric pump motor or finding an alternative motor to change itself. I'm owner of one HDJ100-GNAEZ 2007

 

[Shinook]

Hello, first at all try this : First on the morning, open your engine bay ,then you must go putting in ACC mode, then at this moment the "Power Brake pump" will start doing some relatives checking and of course that little motor will start a sound, but i'm pretty sure it will sound like a chirp or something when carbon brushes has been worn , in that case , the possible solutions are : rebuilt electric pump motor or finding an alternative motor to change itself. I'm owner of one HDJ100-GNAEZ 2007

Thanks.

I guess I should've updated this thread, it was definitely the brake booster motor/accumulator. It sounded howling first start of the day then stopped briefly, the alarms on the dash for ABS gave it away so I just replaced the entire assembly and it stopped. The brakes worked fine but living in the mountains I don't have much room to really mess around with brake failures so I just replaced the entire thing with a OEM unit. I just assumed it was engine related when I posted it because it sounded that way, it never occurred to me it could be an electric motor for the brakes, but that is an easier switch thankfully.