A good flexplate does not wobble. A warped flexplate wobbles around the outside ring teeth, even if the warp is slight. ... Under-torquing can cause a premature separation, causing the bolts to slam and break off, or jam the flexplate teeth into the starter gear teeth.
What are the signs of a bad flexplate?
Symptoms of a bad flex plate
- Clunking, grinding, chirping, or rattling noises from rear of engine when engine is idling.
- Knocking noise when engine is shifted into drive or reverse.
- Heavy vibrations felt through the driver's seat when driving at normal speeds.
- Rough-running engine.
- Loss of power at higher speeds.
What does a loose flexplate sound like?
A loose bolt on a flexplate or a crack between it's bolt holes can result in a; knocking or rattling sound. The sound is very similar to a bad connecting rod and is often, misdiagnosed.
