What would happen if I have a cracked flex plate

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! A cracked flex plate can cause a variety of symptoms, and none of them are pleasant! Initially, you might hear a rattling or knocking noise, especially when accelerating. This can lead to misfires, like you experienced, because the flex plate connects the engine to the transmission and helps with timing. If the problem worsens, you could end up with the car not starting at all, just making a whining sound. The crack disrupts the connection needed to engage the starter with the engine properly. Good luck! If you have any other questions, please call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!