Overdrive Range, Fourth Gear - Torque Converter Clutch Applied

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At higher vehicle speeds, the Hydra-matic 4L60-E transmission uses an overdrive gear ratio (fourth gear) in order to increase fuel economy and in order to maximize engine performance. When vehicle operating conditions are appropriate, the PCM energizes the 1-2 shift solenoid valve to shift the tra...

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Document Title: Overdrive Range, Fourth Gear - Torque Converter Clutch Applied

vehicle

gear

fourth

order

operating

conditions

shift

solenoid

valve

open

signala

fluid

exhausting

through

pressure

circuit

spring

force

upshift

position

moves

signal

sequence

acting

orificed

routed

servo

feed

accumulator

assembly

apply

piston

release

applies

band

clutch

exhaust

checkball

torque

control

converter

regulated

shaft

tccpwm

fourth gear

gear shift

fluid circuit

shift valve

fluid pressure

valve spring

pressure moves

signal fluid

sequence valve

fluid routed

feed fluid

accumulator fluid

clutch apply

apply fluid

accumulator valve

torque converter

converter clutch

converter feed

apply valve

release fluid

regulated apply

tccpwm solenoid

vehicle operating conditions

operating conditions appropriate

gear shift solenoid

third gear shift

fluid pressure shift

pressure shift valve

valve spring force

fluid pressure moves

pressure moves valve

position spring force

signal fluid pressure

servo feed fluid

feed fluid circuit

feed fluid routed

fluid circuit accumulator

accumulator fluid circuit

accumulator fluid pressure

orificed accumulator fluid

accumulator fluid forced

fluid forced accumulator

torque converter clutch

converter feed fluid

fluid circuit converter

clutch apply valve

converter clutch apply

tccpwm solenoid valve