Whiring sound in the rear

2016 LINCOLN MKZ
56,000 MILES • 2.3L • 4 CYL • 2WD • AUTOMATIC
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RCWEBSTER
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  • 2 POSTS
Whirring sound while driving at highway, then when slowing down, and exiting highway motor chugs then stalls. After a few minutes I can re-start and all is okay. This has happened twice in one week.
Dec 1, 2021 at 12:30 PM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
Normally these types of noises are gear or bearing related, but it sounds like due to the engine stalling that the fuel pump is failing.

https://www.2carpros.com/articles/whirring-sound

The way we need to verify this is to monitor the fuel pressure when this happens. That means we need to get it to happen again in order to verify it.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please see the info attached on checking fuel pressure as well.

Basically, I would just hook the gauge up and tape it to the windshield so that you can watch this when it happens, and you don't have to worry about trying to hook the gauge when it happens.

Please let us know what you find with this, and we can go from there.

Thanks
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Dec 2, 2021 at 6:26 AM
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RCWEBSTER
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Thank you for your response. It really helps to know a little before you take your car in for an unknown problem. Also, I am amazed at your service. I expected a lot of advertising and hidden pricing for your mechanical knowledge and got a straight upfront answer to my question. Unheard of in today's world. Thanks again.
Dec 2, 2021 at 5:20 PM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
Haha. Totally understand. We are here to help with whatever you need (car related).

We are free to our members and hope if we can help you that others will see this info and it will help them as well in the future.

Please let us know how it turns out or if you have other questions on this and we can go from there.

Thanks for using 2CarPros.
Dec 2, 2021 at 6:21 PM
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