Marc-P

ECT Power always on, I've driven daily drivers with 9-10 mpg - gas is not really a big deal from my POV as its a step up from the usual.

VegasSC300

ECT... Phone Home!

kyoso23

It holds gears longer and downshifts quicker. It doesn't put more fuel into the system or anything else. It just changes the shiftpoints.

BTW - I get 20-22mpg av. every tank, mostly highway/rush hour traffic (SC400)

TheMole

iTrader: (13)

If it holds gear longer, then wouldn't the shift point be at a higher rpm? And when the engine is at a higher rpm, doesn't it use more fuel?

S27

i live in northern NY and i never knew wut it did until my 6hr drive from manhattan to northern NY... so i tested it out.. turned ECT to power and O/D OFF .... boy let me tell ya... on a two lane road... one going the opposite direction... and on a dotted line... i passed about 5 cars at ONCE.. with ECT PWR.. and O/D OFF ... i was flying at abt 120 ... so i think it makes a big difference if u wanna go fast.!!!

S27

wait... so in conclusion... if i have to drive 6hrs on highway and freeway... does ECT PWR ON save me gas??

kyoso23

The amount of fuel used is dictated by how far your right pedal is pressed down, no matter what gear. So no.

np20412

No. It won't make any noticeable difference at all if its all highway. The fact that you had ECT ON and O/D off makes no difference in actual acceleration. At those speeds, as soon as you pushed O/D OFF the car automatically downshifts into third gear and won't upshift until you turn O/D back on.

np20412

This is the reasoning behind why some people get BETTER gas efficiency with ECT PWR ON...You don't have to push the pedal as far to get the car to downshift and pick up speed quicker when passing and during local driving, because the downshift occurs earlier.

kyoso23

Exactly. I just leave mine on all the time. It's shift points are better suited to my driving.

daydr3am

I use ECT when I'm passing some slow driver on a one-laned highway

vwynn

iTrader: (4)

when in doubt just click it!

as in... WOT and then some.. and "click" WAAAAAAAAAAAAAAAAAAAA

9teens

the ect button doesnt do jack for me. when i need speed i turn the overdrive off

over40driv

with the o/d off, my car tachs out, at a pretty low speed. Anybody know if there is an rpo code that tells what gear ratio you have?

cip

1995 LEXUS SC Specifications

SC 400: Four-speed automatic Electronically
Controlled Transmission with intelligence
(ECT-i). Overdrive fourth gear, dual shift
programs, engine/transmission networking,
lockup torque converter.
3.92:1 (SC 400)

From: http://www.lexus.com/contact/pdf/1995/1995SCspecs.pdf