5 Symptoms of a Bad Torque Converter and Replacement Cost

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The engine’s rotational power needs a torque converter in order for this torque to be transmitted to the vehicle’s transmission system. The torque converter is located in between the engine and the transmission. There is a flex plate in this area where the torque converter is installed onto. Once the crankshaft moves, the flex plate spins and allows the conversion of the torque energy from the engine to the transmission to take place.

When there is a problem with the torque converter, people often misunderstand the symptoms and think something is wrong with their transmission itself. This would be a very expensive assumption to make because if you have a mechanic replace your transmission, you are going to be spending thousands of dollars on another one. It would be much cheaper to just have the torque converter replaced instead.

The Top 5 Symptoms

Below are the top 5 symptoms of a bad torque converter.

1) Strange Sounds – A bad torque converter will cause whining or rattling noises will be heard. These noises will be louder when you are driving versus when you are parked. But once you go from park to drive, the noises will get louder and more frequent. In any event, you should take these noises seriously.

2) Speed Changes – You may be driving along and notice sudden decreases or increases in your vehicle’s acceleration. This happens when you have a faulty torque converter which is causing its output pressure to be inconsistent. If you have to drive under tough weather conditions, it will get very dangerous to have this problem occurring.

3) Shakiness – When you accelerate your vehicle to about 40 miles-per-hour and it feels shaky, this could mean that your torque converter has issues. It might have the same feeling as if you’re driving on a bumpy road. There will be no advanced warning of when this will happen either. But when it happens the first time, get your vehicle to a mechanic right away.

4) Transmission Slipping – A bad torque converter won’t be good at managing the amount of transmission fluid that it sends into the transmission. Sometimes it will send too much fluid and other times it won’t send enough. As a result, there will be slippery gears inside of the transmission which then causes the acceleration to decrease. This means that more fuel will be consumed which will weaken the vehicle’s fuel economy. However, make sure that you have an adequate amount of transmission fluid in the system because sometimes having a low amount will cause this symptom to happen too.

5) Shifting Problems – If the torque converter is bad then its output pressure will be lower. This means that your shifts will feel very soft or they will be greatly delayed. As time goes on, the shifts will feel very hard and rough. The only way to reverse this is to make the output pressure of the torque converter better. This requires the engine’s RPM to be higher. But, you will need to a new torque converter in order to make that happen.

Read also: Radiator Coolant Overflow Tank: Functions, Bad symptoms and Replacement Cost

Replacement Cost

The replacement cost of a bad torque converter won’t exactly be cheap, but it will still be cheaper than replacing an entire transmission. If you perform the torque converter replacement job yourself, you are only looking at around $140 to $490 in parts costs. But if you are going to an auto mechanic and getting a professional replacement service, then it will cost between $400 and $500 just for the labor. The reason the labor costs are so much is that the mechanic will need to remove the transmission in order to access the torque converter. Therefore, you could very well end up paying close to $1,000 total for this replacement job.

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