Just bought a 2019 manual mirage, I hear a high pitched hum coming from the back

[llama_man]

Hey all! I can hear a high pitch hum(? not sure what to call it, it's just a "eeeeeeeee" very high pitched) coming from the back of the car. It's a manual transmission.

I have the car with me for 7 days before I choose to buy or not. To me it doesn't sound like a bearing "clak clak" sound, it's just a consistent high pitch hum. It doesn't change if I accelerate, If I'm in neutral, or if I'm entirely idle.

Any ideas? Thank you all

video with sound https://youtu.be/VCV11Xbfe50

[MetroMPG]

Fuel pump?

[llama_man]

Fuel pump?

I had someone say the same thing on reddit. Do you know if this is a hard/expensive part to find/replace? I'm seeing if its worth returning the car or not. As much as I fell in love with this little car, I don't want to finance something that will break on me and cost thousands of dollars.

Thanks for the help!

[Johnny Mullet]

The fuel pump can be accessed under the rear seat.

[llama_man]

Thank you, is this an expensive repair and/or common issue with the mirage?

[MetroMPG]

I'd try this first to figure out if the pump is the source of the sound:

When you first turn the key to "ON", (WITHOUT starting the engine), the fuel pump will run for a second or two to prime the system.

(If you have some fancy non-key/pushbutton ignition, I'm not sure how that works.)

Is it the same/similar sound?

[llama_man]

I'd try this first to figure out if the pump is the source of the sound:

When you first turn the key to "ON", (WITHOUT starting the engine), the fuel pump will run for a second or two to prime the system.

(If you have some fancy non-key/pushbutton ignition, I'm not sure how that works.)

Is it the same/similar sound?

I just tested that and i cannot hear a sound in the ON position (without engine). It's hard to say because the car beeps as I put it in the ON position.
I did lift the backseats to hear better and I'm pretty sure it's coming from the fuel pump. I've decided to take it in to a mechanic on Monday. Crossing my fingers it's not a big issue and that I can keep the car.

Thank you so much for your help.

[llama_man]

I found this thread on reddit, and im pretty sure this guy has the same issue as me.

https://www.reddit.com/r/Autos/comme...ing_sound_any/

[Wallythacker]

Many times a cracked pump can be repaired if you are the least bit handy. A new pump is $hundreds, even used it's likely costly. It's a rare but known problem with the Mirage. Plastics are overused in modern autos IMO.

[Fummins]

Thank you, is this an expensive repair and/or common issue with the mirage?

They're not really a common problem that I've seen. They're easy to replace though.