vibration under 2000rpms
Hi,
I'm starting to get a very noticible driveline (via shifter) vibration under 1800 rpms+under load. If I freely rev the engine in netural at 1200/1500rpms, etc.. there's hardly any vibration. Could this condition be caused by a defective harmonic damper (just replaced in June)? Or a bad spark plug?
thanks,
Cliff
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95GT, HEAVY pkg.  , usual bolt-ons, heads, intake (explorer), S/C. Daily driver,, 12.8x@114.x on a broken rear diff.
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