ect

[blakscorpion21]

i have a 90 gts and is has a byutton in front of the shifter that says ect power/normal can anyone tell me whjat this does

[blakscorpion21]

.......

[Brian R.]

It changes the shift points for the automatic transmission. The Normal position is best for gas mileage. The Power position delays the upshifts and gives better power to the wheels for driving in hills and such.

[shsaint]

is that the same as the overdrive on / off?

[blakscorpion21]

oh thaty was obvious. thanks guys

[Celica Tech]

It also changes how hard the clutches engauge when the tranny shifts. I sugest, unless you have granny in the car, keep it in pwr. Harder clutch engaugement means less slipping, less slipping means less ware on the trans clutches and fluid.

[Brian R.]

Originally Posted by shsaint

is that the same as the overdrive on / off?

No, the OD off just keeps the OD from engaging. The OD is just your top gear.

[Brian R.]

Originally Posted by Celica Tech

It also changes how hard the clutches engauge when the tranny shifts. I sugest, unless you have granny in the car, keep it in pwr. Harder clutch engaugement means less slipping, less slipping means less ware on the trans clutches and fluid.

This is interesting. I have not heard about this effect. Where did you find out about this? I don't doubt your information, but I am going to try and verify it from somewhere else.

Thanks for the new information

[blakscorpion21]

actually it does rev higher when the o/d is off in all gears and turns it into a 4 speed

[Celica Tech]

Originally Posted by Brian R.

This is interesting. I have not heard about this effect. Where did you find out about this? I don't doubt your information, but I am going to try and verify it from somewhere else.

Thanks for the new information

I get this infromation from Toyotas technical information system, TIS for short, however only avalible for veiwing to toyota techs, this web based information site is full of all kinds of this type of information that you wouldn't be able to get anywhere elce exept from the maker of the product.

Also, if you get to test drive a car with ECT capabilties, hammer the throtle through the first 2 shift points when in normal mode, then try it in power. With the gas all the way to the floor it will rev out the gears all the way (unless your shift down cable is broken or not adjusted) even in normal mode, BUT you will notice it lets trans slip more. This is more so true in the newer cars than the older ones dew to trans and computer upgrades. Regardless I'll stop rambleing now.

[Brian R.]

Good - Thanks for the information

What year did the tranny start slipping more in normal mode?

[Celica Tech]

Dont know the definates, but I do know from personal experence that back in 88 the supras with ect slipped more in normal, heck alot easyer to brake those wheels loose in pwr mode.

[Brian R.]

How about other Toyota vehicles, like trucks and Camrys?