Hydraulics
This type of hydraulic pressure determines the amount of line pressure applied during shifts.
What is throttle pressure/TV Valve?
Grinding while shifting gears in a manual transmission, is most likely caused by?
What is Synchros. (Synchronizer Rings)
The stator in a torque converter performs this primary function.
What multiplying fluid pressure
The primary purpose of a manual valve in the valve body is this.
How to tell the transmission which gear you want
This was the first automatic transmission offered by General Motors in 1939.
What is the Hydra-Matic?
In an automatic transmission, this valve modulates line pressure based on engine load.
What is the pressure regulator valve/epc??
What year was the 700R4/4L60 Introduced?
When was 1982.
The lockup clutch in a torque converter engages to eliminate this type of loss.
What is slip?
A sticky shift valve can cause this symptom during upshifts.
What is delayed or harsh shifting (no shift/slip shift)?
This transmission replaced the TH350 in GM vehicles and introduced overdrive.
What is the 700R4/2004R?
This hydraulic circuit ensures pressure increases under heavy acceleration or load.
What is the boost circuit/valve?
This specialized tool is used to measure clutch pack clearance.
What is a fueler gauge?
This type of torque converter failure causes transmission fluid to darken and overheat.
What is a failed lockup clutch or worn pump bushing?
This tool is used to recondition worn valve bores during a rebuild.
What is a hone/reaming tool or oversized valve kit?
This term refers to electronically controlled automatic transmissions introduced in the 1990s.
What is Electronic Pressure Control (EPC) transmissions?
When a spool valve sticks in the bore due to wear or contamination, this condition can occur.
What is pressure leakage or shift timing issues?
Excessive input drum runout typically causes this issue in higher RPM applications.
What is worn bushings or seal leakage?
High-stall converters are beneficial in this specific performance situation.
What is high RPM launches or drag racing?
In a 4L60E, this solenoid controls TCC apply and release.
What is the PWM solenoid (Pulse Width Modulation solenoid)?
The ZF8HP transmission is notable for having this number of forward gears.
What is 8?
Name the specific function of a 2-3 accumulator in a 4L80E transmission.
What is cushioning/softening the 2-3 shift to reduce harshness?
A 4L60 only has 1st and 3rd gear, what is the likely failure?
What is Band Failure/ Servo Piston Failure
When diagnosing a torque converter failure, the presence of blueing on the torque converter usually indicates this problem.
What is overheating due to prolonged slip?
A separator plate with excessive wear at the check ball locations can lead to this issue.
What is fluid cross-leakage or pressure loss?
This Chrysler rear-wheel drive transmission was notorious for its aluminum case in the 1960s
What is the TorqueFlite A727?