How do you know if you need a new flexplate?
As a car owner, understanding the components of your vehicle is crucial for maintaining its performance and longevity. One such component is the flexplate, which plays a vital role in the operation of automatic transmissions. In this article, we will explore the signs that indicate you may need to replace your flexplate, ensuring your vehicle runs smoothly and efficiently.
What is a Flexplate?
The flexplate is a thin, flexible metal disc that connects the engine's crankshaft to the torque converter in an automatic transmission. It serves as a coupling mechanism that allows the engine to transmit power to the transmission while accommodating the slight misalignments that can occur during operation.
Signs You May Need a New Flexplate
Recognizing the symptoms of a failing flexplate can save you from more extensive repairs down the line. Here are some common signs to watch for:
- Unusual Noises: If you hear grinding, rattling, or clunking noises coming from the transmission area, it could indicate that the flexplate is damaged or cracked.
- Vibration: Excessive vibration while driving, especially during acceleration, may suggest that the flexplate is out of balance or has become warped.
- Difficulty Starting: If your vehicle struggles to start or the engine cranks but does not turn over, it may be due to a faulty flexplate affecting the torque converter's engagement.
- Transmission Slippage: If you experience unexpected changes in gear or the transmission slips, it could be a sign that the flexplate is not properly transmitting power.
- Visible Damage: If you have access to the flexplate, inspect it for cracks or signs of wear. Any visible damage warrants immediate attention.
What to Do If You Suspect a Bad Flexplate
If you notice any of the above symptoms, it is essential to take action promptly. Here are the steps you should follow:
- Consult a Professional: Schedule an appointment with a trusted mechanic who can diagnose the issue accurately.
- Perform a Visual Inspection: If possible, have the mechanic inspect the flexplate for any visible signs of damage.
- Consider Replacement: If the flexplate is indeed damaged, replacing it is crucial to prevent further damage to your transmission.
- Regular Maintenance: To avoid future issues, ensure regular maintenance checks on your vehicle, focusing on the transmission and related components.
Conclusion
Understanding the role of the flexplate and recognizing the signs of its failure can help you maintain your vehicle's performance. If you suspect that your flexplate may need replacement, don't hesitate to consult a professional mechanic. Keeping your vehicle in top shape ensures a safer and more enjoyable driving experience.
Frequently Asked Questions
How to tell if your flex plate is bad?
A bad flexplate does not sound like a nail in a can, it sounds more like the rapping of a bad rod bearing. It's a distinct banging sound. Also, it goes away in gear when there's load on the torque converter. You hear it at idle in neutral, but you would not hear it when accelerating.
When to replace flexplate?
If enough teeth are missing, the engine may fail to turn over altogether. If a flex plate cracks or comes loose, it can make a knocking sound while the engine is running, which may sound very similar to an engine rod knock. It can also cause the vehicle to vibrate and become noisy, particularly at higher RPM.
Can you drive a car with a cracked flexplate?
With a cracked flex plate, it could last for years or shatter tomorrow. The likely scenario is the crack will open enough that you won't be able to engage the starter. I would replace it sooner than later.
What is the life expectancy of a flexplate?
The lifespan of a flexplate can vary depending on factors such as driving conditions, vehicle usage, and maintenance. On average, a flexplate can last anywhere from 100,000 to 150,000 miles.
How much does it cost to replace a flex plate?
The flex plate or flywheel plate should cost somewhere in the region of $50-160, on average. Another thing to consider is that this is usually a difficult part to reach. That means you'll be spending a lot of time under the hood, so make sure to factor that time into your replacement budget.
What can damage a Flexplate?
 Excessive crankshaft flange run-out or end plate can also cause flexplate cracking. This may occur in worn engines or engine that have been poorly rebuilt. An engine, transmission or torque converter that has been dropped may also have damage that will cause misalignment.
What causes a flexplate to fail?
Because perfect alignment of the engine and transmission are not possible, the flexplate can absorb the minute misalignment. As misalignment increases, the flexplate flexes more. This continual flexing eventually causes the metal to fatigue and the flexplate cracks.
Can you start a car with a bad flexplate?
If the motor can't lock with the faulty gear, it might lead to issues like failure to start the engine.
What can damage a flexplate?
 Excessive crankshaft flange run-out or end plate can also cause flexplate cracking. This may occur in worn engines or engine that have been poorly rebuilt. An engine, transmission or torque converter that has been dropped may also have damage that will cause misalignment.
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.
