No Crank or No Start Due to Cracked Flex Plate on Kia Sephia

Submitted by Vehicle Owner · Sep 8, 2025
Published by RepairPal

Problem overview

Automatic Transmission If the engine won't crank or cranks but does not start, the flex plate between the engine and transmission may be cracked. A cracked flex plate will cause an erratic cranking signal to the powertrain computer.

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