Loading

What happens if I drive with a bad flexplate?

Driving with a bad flexplate can have serious consequences for your vehicle's performance and safety. A flexplate is a crucial component in an automatic transmission that connects the engine to the transmission, and a malfunctioning flexplate can lead to a range of problems, from decreased fuel efficiency to potential engine failure.


What is a Flexplate?


A flexplate is a circular metal disc that connects the engine's crankshaft to the transmission's torque converter. It acts as a flexible coupling, allowing the engine and transmission to rotate at slightly different speeds while transmitting power from the engine to the transmission. The flexplate is an essential component in an automatic transmission, as it helps to smooth out the power delivery and prevent damage to the transmission.


Symptoms of a Bad Flexplate


There are several signs that a flexplate may be failing, including:



  • Vibrations or shaking while driving: A worn or damaged flexplate can cause noticeable vibrations or shaking, especially at higher speeds or under heavy acceleration.

  • Difficulty shifting gears: A bad flexplate can interfere with the transmission's ability to shift smoothly, leading to delayed or rough gear changes.

  • Decreased fuel efficiency: A malfunctioning flexplate can cause the engine to work harder, leading to decreased fuel efficiency.

  • Grinding or clunking noises: A damaged flexplate may produce grinding or clunking noises, especially when the vehicle is in gear.


If you notice any of these symptoms, it's important to have your vehicle inspected by a qualified mechanic as soon as possible to prevent further damage.


Consequences of Driving with a Bad Flexplate


Driving with a bad flexplate can have several serious consequences, including:



  • Transmission damage: A malfunctioning flexplate can put excessive stress on the transmission, leading to premature wear and tear or even complete failure.

  • Engine damage: A bad flexplate can cause the engine to work harder, leading to increased wear and tear on engine components and potentially causing engine failure.

  • Safety concerns: Vibrations or shaking caused by a bad flexplate can make the vehicle more difficult to control, increasing the risk of an accident.

  • Decreased fuel efficiency: A malfunctioning flexplate can reduce the vehicle's fuel efficiency, leading to higher fuel costs and increased environmental impact.


To avoid these consequences, it's important to have your vehicle's flexplate inspected and replaced if necessary as soon as possible.

How to tell if a flexplate is cracked?


Here are some of the warning signs 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.



Can a bad flywheel damage transmission?


A severely damaged flywheel might hinder your ability to change gears and your car won't go into correct gear. This symptom suggests extensive wear and other transmission components may also be compromised. In extreme cases, the vehicle may become undriveable, emphasising the urgency of addressing the issue promptly.



How do you know if you need a new flexplate?


Bad Flex Plate Symptoms

  1. Whining Noises During Engine Start.
  2. Strange Noises During Engine Idle or Shifting Gears.
  3. Vibrations While Driving.
  4. Other Symptoms.



What happens when a flexplate goes bad?


When the flexplate fails, your motor will run while it is on, but it doesn't sound good because you have broken metal in the bell housing. Pro tip, shut that sucker off. You also will not be able to start it back up and when you try, it will also sound nasty, real real nasty.



What are the symptoms of a bad torque converter?


There are several signs that you might have a torque converter issue:

  • Loss of Acceleration.
  • Slipping Between Gears.
  • Vehicle Won't Shift at All.
  • Transmission is Overheating.
  • Transmission Fluid Leak.
  • Bad Transmission Fluid.



How long will a bad flywheel last on a car?


around 80,000 to 100,000 miles
How long will a noisy flywheel last? If your flywheel is making an unusual noise, this is a sign it has worn out and needs replacing. Flywheels usually last around 80,000 to 100,000 miles, sometimes more.



Can you start a car with a bad flexplate?


Without a flex plate, the necessary connection between the engine and transmission is lost, preventing the engine from starting. If you're having issues with your flex plate, it's best to have it repaired or replaced before attempting to start the vehicle.



Can you drive with a bad flex plate?


Usually you can drive it, just don't be driving it hard. They are actually a flex plate and hard braking and acceleration causes the plate to flex forward and backwards because the touch converter is heavy and it is relying on the flex plate to keep it in place. Avoid high rpms because they can potentially come apart.



Is it okay to drive with a bad flywheel?


Safety Risks: Driving with a compromised flywheel can pose safety risks, especially if it leads to sudden loss of power or control of the vehicle. If you suspect that your flywheel is warped, it's best to have it inspected and replaced by a qualified mechanic before continuing to drive the vehicle.



Can a bad flywheel cause your car not to start?


If one or more of the flywheel's teeth are damaged or broken, then the wheel can't engage with the starter motor.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.