Engine vibration between 1,300 and 1,600 RPM's

Tiny
L.R. SMITH
  • MEMBER
  • 1965 FORD MUSTANG
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 154,000 MILES
I have a vibration between 1300 and 1600 rpm then it clears out and returns at around 2,300. I have replaced the transmission support and the vibration got worse. I removed the fan belts and the vibration got better by about 1/3. Fan blades and harmonic balancer you think? Thanks
Thursday, February 6th, 2020 AT 6:13 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good morning,

The fan was my first choice as well.

If it continues, then it could be the balancer, flywheel or worse case is the crankshaft itself.

It is externally balanced with the balancer and flywheel.

Roy
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Thursday, February 6th, 2020 AT 6:46 AM

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