exhaust rattle

[aldo2006]

my car has been making this rattle noise and i’m not sure where it’s coming from or what it could be.

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[GTP]

We had a similar sounding exhaust rattle at startup on our Explore ST. Just got it back from dealer for a recall which replaced a cat converter.

 

[Rod G]

sounds to me like the heat shield sometimes the rivets will loosen up over time

 

[blankman]

It definitely sounds like metal to metal contact. Is this the stock exhaust or something aftermarket?

 

[Cobra Jet]

Check and make sure the A/C hardline on passenger side is t making contact with the inner frame rail or inner fender. It’s been found that in some V8 S550’s that line rubs or comes in contact with the area mentioned - causing a incongruity or rattle sound when engine is at idle or in a certain rpm range.


Check the emergency brake cable and attaching assembly found under the driver side trans tunnel. This has been a known source of tick/rattle as well and is hard to replicate unless in a certain RPM range. When the cable is loose, it vibrates or raps against the trans tunnel under certain conditions OR could be touching exhaust mid pipe. How to adjust the cable and assembly:
https://www.mustang6g.com/forums/threads/how-to-adjust-your-parking-brake.25204/

If that was not the source of the noise, then also check:

Trans block spacer plate, it’s a common issue across the S550 and F150 platform:
https://www.mustang6g.com/forums/threads/engine-transmission-plate-noise-fix.115718/

https://www.mustang6g.com/forums/th...hen-accelerating-hard-above-4000k-rpm.107728/

Check the driveshaft center support bearing assembly. There is a small aluminum plate attached to the bottom of it which comes loose and rattles - see this thread:
https://www.mustang6g.com/forums/threads/identify-this-metallic-rattle-.161210/#post-3455184

Another MT82 source of clunk/rattle coming from under car:
https://www.mustang6g.com/forums/threads/found-source-of-clunk.133988/#post-3309826

 

[aldo2006]

Check and make sure the A/C hardline on passenger side is t making contact with the inner frame rail or inner fender. It’s been found that in some V8 S550’s that line rubs or comes in contact with the area mentioned - causing a incongruity or rattle sound when engine is at idle or in a certain rpm range.


Check the emergency brake cable and attaching assembly found under the driver side trans tunnel. This has been a known source of tick/rattle as well and is hard to replicate unless in a certain RPM range. When the cable is loose, it vibrates or raps against the trans tunnel under certain conditions OR could be touching exhaust mid pipe. How to adjust the cable and assembly:
https://www.mustang6g.com/forums/threads/how-to-adjust-your-parking-brake.25204/

If that was not the source of the noise, then also check:

Trans block spacer plate, it’s a common issue across the S550 and F150 platform:
https://www.mustang6g.com/forums/threads/engine-transmission-plate-noise-fix.115718/

https://www.mustang6g.com/forums/th...hen-accelerating-hard-above-4000k-rpm.107728/

Check the driveshaft center support bearing assembly. There is a small aluminum plate attached to the bottom of it which comes loose and rattles - see this thread:
https://www.mustang6g.com/forums/threads/identify-this-metallic-rattle-.161210/#post-3455184

Another MT82 source of clunk/rattle coming from under car:
https://www.mustang6g.com/forums/threads/found-source-of-clunk.133988/#post-3309826

thanks man ill be checking this out upcoming weekend.

 

[aldo2006]

It definitely sounds like metal to metal contact. Is this the stock exhaust or something aftermarket?

it’s a after market exhaust x pipe

 

[aldo2006]

We had a similar sounding exhaust rattle at startup on our Explore ST. Just got it back from dealer for a recall which replaced a cat converter.

only on startup? the rattle is happening the whole time car is moving and idled aswell

 

[GTP]

only on startup? the rattle is happening the whole time car is moving and idled aswell

Correct

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