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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Why in the world would...

Old 05-22-2006, 01:21 AM
  #1  
Twisted
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Default Why in the world would...

Why would changing a motor mount cause a vibration between 2500 and 3000 rpms? Any ideas?
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Old 05-22-2006, 01:52 AM
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Grimace5.0
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No idea.. is that what your vibe is/was?
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Old 05-22-2006, 01:56 AM
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TENGRAM
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Default RE: Why in the world would...

possibly need to readjust the motor mounts?
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Old 05-22-2006, 03:00 AM
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ORIGINAL: Grimace5.0

No idea.. is that what your vibe is/was?
It sure seems like it showed up the day I changed the motor mount. I used to feel it lightly on the highway, at around 75. Now I feel it in every gear in that rpm range. So motor mounts need to be adjusted sometimes, Tengram?
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Old 05-22-2006, 03:38 AM
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yeah, the engine has to sit on them just right or you'll get vibrations
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Old 05-22-2006, 04:02 AM
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ORIGINAL: TENGRAM

yeah, the engine has to sit on them just right or you'll get vibrations
Thanks, Tengram. I'll look into that.[sm=smiley20.gif]
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Old 05-22-2006, 07:49 PM
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TENGRAM
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what mounts did you replace them with? i have heard of problems with some of the poly ones, specifically energy sus. does the engine appear to sit level?
ORIGINAL:5.0Hardtop
...the motor mounts have big nuts on the bottom that hold them to the crossmember, the holes in the crosmember are slotted. If motor leans, loosen nuts use a jack to level as needed and retighted the nuts...
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Old 05-22-2006, 08:10 PM
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sorry repost...[sm=oopssign.gif]
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