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How can I tell if my flywheel (flexplate) is going bad? I have a 1993 Jeep Wrangler YJ (automatic transmission). I have a rumbling/rattling noise and shifting gears is rough.
Bad flex plates will cause vibration and generally make a lot of noise...due to cracks...it will not have an impact on the shifting of gears...a flexplate is merely a physical link from the engine to the transmissions torque converter...it either connects them together of is broken and does not...if in the process of breaking it will make a lot of noise alarming you to its condition. Let me know if you need any further assistance