How does a torque converter in an automatic transmission work?
Automatic transmissions use a torque converter. A torque converter is a coupling that relies on a fluid hydrodynamic to allow the engine to spin independently of the transmission.
What happens if there is no torque converter?
They include: No Fluid or Low Fluid – a torque converter without transmission fluid is going to be like an engine without gas. It’s just not going to go anywhere. That is to say, that I won’t be able to facilitate the transfer of energy from the motor to the transmission and the car won’t move.
Why does the converter noise go away when the transmission is in neutral?
Since the entire converter (pump, turbine and stator) turns while the transmission is in park and neutral, a converter noise will go away in those ranges. When the transmission is in gear and the drive wheels are stationary, the turbine in the torque converter doesn’t spin, because the turbine shaft is stationary.
When does the transmission noise go away in a 4T60?
For example, a 4T60-E has a noise in neutral while stationary. The noise goes away when the transmission is in gear. Right away, you can rule out the torque converter. Since the pump is producing the same pressure in neutral as it is in gear, you can also rule it out.
Can a small torque converter be too small?
Also don’t get a converter that’s too small If you are driving a big block engine that makes its torque around 4500 and you select a converter with stalls at 4000, don’t expect it to be a fun ride on the street due to high stalls and rear axle gear locking up to the converter.
Where can I get performance rear wheel drive transmission parts?
PATC is on the cutting edge of performance rear wheel drive American transmission development. We work with different manufacturers in the development of stronger parts. We have the most complete inventory of performance transmission parts for Ford, GM and Dodge than you’ll find anywhere else.
What does 100 rpm of torque converter slippage mean?
Usually, 100 rpm of converter slippage equals a loss of one and a half miles per hour through the traps. Trap speed rpm will tell you if the converter is operating efficiently when going through the traps. Typically, 100 rpm of torque converter slippage equates to a loss of 1 1/2 mph through the traps.