When to release the throttle on a torque converter?
When to release the throttle on a torque converter?
Allow at least 1 minute at idle speed with transmission in neutral for the fluid to cool before retesting or turning off the engine. If stall speed exceeds the specification or unusual noises are heard, release the throttle pedal immediately to avoid further damage to the transmission.
How long does it take to stall a torque converter?
With one foot on the brake pedal, press the accelerator all the way for 2-3 seconds with the other foot. Be careful not the exceed 5 seconds or the transmission could blow out.The stall speed is the RPM the engine maxes out at.
What happens when you put the torque converter in Park?
The noise may be light while idling in park, but when you put the transmission in gear, the sound will increase in volume and frequency, and that is the death knell of your converter. As the output pressure from the torque converter drops, the transmission will be starved and start to slip.
What’s the best way to test a torque converter?
Pressing the brake pedal all the way, turn the engine on and shift the transmission to drive. Remember to not release the brake pedal. With one foot on the brake pedal, press the accelerator all the way for 2-3 seconds with the other foot.
Allow at least 1 minute at idle speed with transmission in neutral for the fluid to cool before retesting or turning off the engine. If stall speed exceeds the specification or unusual noises are heard, release the throttle pedal immediately to avoid further damage to the transmission.
How does the torque converter work on a 700R4?
Using the connectors at the end of the switch, 12 volts is sent to lock up the 700R4 torque converter when the plunger is pushed in (brake pedal not applied – left). The ohmmeter shows continuity. Depressing the brake pedal interrupts the 12-volt power and unlocks the converter (center).
Why do I need to lock up the torque converter?
The TCC System uses a solenoid-operated valve to couple the engine flywheel to the output shaft of the transmission through the torque converter. Lockup reduces slippage in the converter increasing fuel economy. For the converter clutch to apply, two conditions must be met: Internal transmission fluid pressure must be correct.
What causes a car to stall when the torque converter fails?
Vincent Ciulla is a certified master automotive technician who has diagnosed and repaired light trucks, domestic and foreign cars, and diesel engines, for more than three decades. A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop.
