Rear vibration noise

2005 FORD FIVE HUNDRED

183,000 MILES • 3.0L • 6 CYL • AUTOMATIC

BRANDON CATLEY

MEMBER
2 POSTS
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When my vehicle is stopped completely I hear a harsh vibration like noise coming from the rear. This problem stops when I accelerate. This doesn’t always happen when I’m driving the car.

Car listed above is a Limited AWD CVT Transmission

May 29, 2021 at 9:04 PM

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JACOBANDNICKOLAS

CAR REPAIR CONTRIBUTOR
110,190 POSTS

Hi,

If you have a helper sit in the vehicle with it running and in gear, see if you can tell approx where it is coming from. It could be the exhaust rattling or nearly anything on the vehicle.

I can tell you that it isn't uncommon for the heat shields to come loose and rattle. There are some on the exhaust system and there are some bolted under the vehicle between the exhaust and the floor. Those ones usually come apart and can rest on the exhaust causing this kind of noise.

If it's possible, record the sound and upload it for me to hear. Hopefully, it will be something I heard in the past and will recognize. Also, take a rubber mallet and tap on the exhaust to see if you can reproduce the noise.

Let me know.

Joe

May 29, 2021 at 9:22 PM

BRANDON CATLEY

MEMBER
2 POSTS

I will get video, but also note that this only happens in drive once I put it in park it completely stops. The sound is coming from the rear.

May 30, 2021 at 6:18 AM

JACOBANDNICKOLAS

CAR REPAIR CONTRIBUTOR
110,190 POSTS

Hi,

I understand. To be honest, when you place it in park, the engine's RPMs change (increase a bit) and you take a load off the drivetrain. That can cause the noise to stop.

Let me know what you find or if you have other questions.

Take care,

Joe

May 30, 2021 at 6:01 PM