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Vibration under Engine Brake

Old 02-18-2018, 04:52 PM
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Join Date: Feb 2018
Location: Ontario
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Default Vibration under Engine Brake

Hi guys,

I have a 2013 Mustang V6 with about 125k km on it. As of around 100k it started vibrating at high speeds on the highway when I would allow the car to slow down gradually using only the engine brake. Recently it started doing the same even at lower speeds. I was informed by Ford that it might be the engine mounts, and ended up replacing them, but the vibration is still there. If i take the car out of gear the vibration stops, and if i accelerate slightly while it is vibrating it stops. It does not happen all the time, but I would say 3 out of 4 times it will.

Has anyone else experienced this? Could it be the fault of the driveshaft being loose, or would it have something to do with the manual transmission?

Please let me know.
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Old 02-19-2018, 06:09 AM
David Young
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Location: Clinton, Tennessee
Posts: 168

I have an automatic but, 'from what I have read', it 'might' have something to do with the dual mass pressure plate. Or its called something like that........I bet the Ford dealer made a pretty penny off of you
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Old 06-06-2019, 02:34 PM
Join Date: Jun 2019
Location: Illinois
Posts: 1

Bump having same issue was thinking u joints but I checked them out and they look good, still not ruling that out
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Old 06-06-2019, 04:37 PM
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Location: Ft. Worth Tx
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trans mount?
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