pnw2024
Member
Has anyone had this issue when shutting of their expedition? Sounds like the exhaust is expanding, & pebbles are bouncing around inside the exhaust. I can’t attach a video. Any help is greatly appreciated. Thanks.
2021 Expedition max exhaust noise
- Thread starter pnw2024
- Start date
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99WhiteC5Coupe
Full Access Members
I haven’t had the issue.
An underbody heat-shield issue can cause the noises you are describing. Have you checked to see if any are loose or damaged, or bent against another part of the vehicle?
Any driveability issues? Any check-engine light? If one or both catalytic converters are defective and the honeycomb inside is defective, it can cause a rattling noise as you describe.
pnw2024
Member
Had the local ford dealer inspect it, they claim it’s normal and just the exhaust cooling down. I believe they’re wrong, as this doesn’t happen to any others
JasonH
Full Access Members
You can upload videos to YouTube, imgur, Google Drive, etc. and share the link here.
pnw2024
Member
2021 ford expedition noise
Anyone know what this noise is and the fix? Turned off my 2021 ford expedition and it makes this noise. Seems like the exhaust cooling down or expanding. Thx
youtube.com
pnw2024
Member
Here’s the video. Thanks
pnw2024
Member
Any ideas from the video?
1775SS
Member
Definitely sounds like the heat shield. Have you noticed this sound in the past or did it just start recently ?
It would also be more noticeable in cooler temperatures. Not sure if its been cooler where you live.
It would also be more noticeable in cooler temperatures. Not sure if its been cooler where you live.
newyorkistansux
Member
My 21 Explorer ST normally made the same pinging noises after shutting off after a 45-50 mile drive from the office.
