On most modern vehicles, a bad torque converter illuminates the check engine light. The specific problem is then stored in the vehicle's onboard computer, and mechanics read it using a professional scanning tool. Vehicles manufactured after 1980 generally include these sensors. HowStuffWorks recommends using a speed-stall test for checking older torque converters without sensors.Know More
The torque converter includes a pump, turbine and stator. Problems with any of these components can cause the vehicle to shudder on take-off or stopping. They may also cause the transmission to slip while the vehicle moves.
Damage to the torque converter seal often occurs due to overheating of the unit. Transmission fluid then leaks through the failed seal, causing the converter to stop working. Failure of the main transmission torque converter clutch results as the elements of the clutch lock together, often due to severe overloading of the vehicle or distortion of clutch components. Shock to the clutch leads to breakage and converter failure, according to CarsDirect.
If a vehicle with an automatic transmission has difficulty transferring power to the wheels, torque converter replacement or repair is necessary. A damaged torque converter has the potential to eventually shut off an engine. Acceleration problems when operating a vehicle at low speeds indicate an overworked torque converter needing replacement.Learn more in Car Parts & Maintenance
A torque converter is used in vehicles with automatic transmissions to connect the transmission to the engine. The converter transfers movement from the engine to the wheels and allows the engine to continue working slowly when the vehicle is stopped.Full Answer >
The best way to turn off the check engine light on a Nissan is to find out the engine code and have the problem fixed. The check engine light turns off automatically when the issue causing the light to turn on is resolved.Full Answer >
Symptoms of a bad coil pack include rough engine idling, misfiring, lack of power during acceleration, gasoline odor emanating from the exhaust system and illumination of the check engine light. In newer vehicles, the coil pack replaces the distributor.Full Answer >
It is possible to turn off the check engine light on a vehicle, including a Grand Am, by disconnecting the battery. It must remain disconnected for at least five minutes. In some cases, this won't remove the trouble codes, but it will turn the light off temporarily.Full Answer >