Ch 5 Torque converter

If the stall speed is lower than specified, what could be the cause? Incorrect ATF was used in the automatic transmission/transaxle A slipping stator clutch Defective turbine Slipping torque converter clutch

A slipping stator clutch

A modified engine may need a torque converter that ________. Is "looser" Is smaller in diameter Has a higher stall speed All of these

All of these

Creep is ________. Normal operation Caused by slippage inside the torque converter Causes the vehicle to move slightly when the engine is at idle speed and the transmission in a drive gear All of these

All of these

Stall testing can be used to find ___________. A slipping stator clutch Slipping clutches Slipping bands All of these

All of these

In a lock-up torque converter, the ________. Clutch plate is splined onto the turbine shaft Clutch lining transfers power through a mechanical connection during lock-up Fluid flow stops through the torque converter Both Clutch plate is splined onto the turbine shaft and Clutch lining transfers power through a mechanical connection during lock-up

Both Clutch plate is splined onto the turbine shaft and Clutch lining transfers power through a mechanical connection during lock-up

A torque converter is being discussed. Technician A says that the turbine provides torque input to the transmission gear set through the input shaft. Technician B says that the pump (impeller) is the driving member and the turbine is the driven member. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Both technicians

Technician A says that at stall speed the impeller is spinning as fast as the engine can drive it. Technician B says that at stall speed the turbine is stationary. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Both technicians

Technician A says that fluid motion inside a converter is controlled by the guide ring. Technician B says that fluid motion inside a converter is controlled by the stator vanes. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Both technicians

Technician A says that the flexplate connects the torque converter to the crankshaft. Technician B says that the torque converter is considered part of the transmission. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Both technicians

The torque converter clutch circuit is controlled by the ________. Driver Fluid temperature Command from the PCM/TCM Fluid pressure

Command from the PCM/TCM

When the impeller and turbine are rotating at about the same speed, this is called ________. Coupling Stall speed Torque multiplication Vortex flow

Coupling

A torque converter can multiply engine torque at the stall speed by about ________. Double Three times 10 times 100 times

Double

During the coupling phase in a torque converter, the stator one-way clutch remains locked. True or False

False

The torque converter clutch is controlled by a hydraulic clutch pedal. True or False

False

In most lock-up torque converters, lock-up occurs when the ________. Fluid flow in the converter is reversed Converter switch valve is moved by the lock-up solenoid Turbine speed reaches a certain rpm Converter speed reaches a certain rpm

Fluid flow in the converter is reversed

The input or driving member of the converter is the ________. Turbine Stator Impeller All of these

Impeller

A vehicle creeps faster than normal when the engine is cold. What is the most likely cause? Normal operation A TCC stuck in the applied position A defective stator one-way clutch Incorrect ATF

Normal operation

The stator is mounted on a ________. One way clutch Hub connected to the engine flex plate Shaft attached to the planetary gearset None of these

One way clutch

A torque converter should be checked by a technician for all of the following EXCEPT ________. Leaks Proper balance Stator one-way clutch operation Turbine end play

Proper balance

A torque converter's turbine end-play has measured to be 0.070 in (1.5 mm). What action should the technician take? Replace or rebuild the torque converter Nothing, the clearance is OK Replace the flexplate shims with thicker shims Use longer flexplate bolts

Replace or rebuild the torque converter

The fluid flow around the circumference of the converter is called _________ flow. Rotary Impeller Vortex Turbine

Rotary

A stall test is used to check the _________. Stator Impeller Turbine Torque converter clutch

Stator

Technician A says that the torque multiplication phase can occur when the stator one-way clutch begins to freewheel. Technician B says that the torque multiplication phase can occur when the stator one-way clutch locks up. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Technician B only

Technician A says that the torque converter impeller is attached to the flexplate and turns as the engine rotates. Technician B says that the turbine is attached to the flexplate and turns as the engine rotates. Which technician is correct? Technician A only Technician B only Both technicians Neither technician

Technicians A only

Lock-up torque converters use a damper assembly to dampen ________. Noise Torsional vibration Lateral force Spring oscillations

Torsional vibration

The parts of a torque converter include ________. Flexplate, housing, and turbine Turbine, impeller, and stator Impeller, flexplate, and housing Stator, turbine, and housing

Turbine, impeller, and stator

The fluid flow from the impeller through the turbine and stator is called ________ flow. Rotary Impeller Vortex Turbine

Vortex

During the coupling phase the ________. Vortex flow nearly stops Stator clutch locks Rotary flow nearly stops Flow stops

Vortex flow nearly stops