firm your shft in the sc430 [ a-650-e ]
06-19-18, 03:37 AM
#61
edit: specifically pertaining to Lexus. I don't know if you're talking about how your 1985 Supra's ECT operates if it is an automatic, but I'm obviously only interested in functions relating to our Lexus vehicles.
Last edited by Mbodall; 06-19-18 at 03:51 AM.
06-19-18, 03:56 AM
#62
I am curious to know how many SC430 drivers use ECT mode regularly. The only time I drove with 'ECT on' was when I picked up my new car from Modesto CA to Irvine CA in 2002, not knowing why it was on....sometimes I have used lower gears manually for power boost. I need to learn how to drive my car optimally using the features and technology available.
06-19-18, 08:16 PM
#63
Pole Position
Noooo, it most definitely does not do that. ECT Power does exactly what I described above in my post 2 posts above yours. To claim that the transmission will only shift at maximum RPM when in "ECT Power" mode is ridiculous and 100% incorrect, and all of us that have ever floored our cars between gears while still in "ETC Normal" mode know that. If you think that I'm mistaken, I implore you to find contrary evidence in an owners manual or quoted from a reputable source online.
edit: specifically pertaining to Lexus. I don't know if you're talking about how your 1985 Supra's ECT operates if it is an automatic, but I'm obviously only interested in functions relating to our Lexus vehicles.
edit: specifically pertaining to Lexus. I don't know if you're talking about how your 1985 Supra's ECT operates if it is an automatic, but I'm obviously only interested in functions relating to our Lexus vehicles.
Put in ECT and floor the gas pedal, you will feel the different. Your first gear will hold up to about 4000 rpm before it shift to 2nd gear, so on and so far.
06-20-18, 03:13 AM
#64
Item 2 in my list refers to anything less than full throttle acceleration. Under all other circumstances, item 2 applies. For example, if you put the gas pedal down half way in ECT Normal, and lets say it shifts at 3,500 RPM, then you put it in ECT Power and put the gas pedal down half way, it'll shift at 3,800. Again, those RPMs are just for example sake and not accurate, but it better explains what I was referring to.
And if your car is shifting at 4,000 RPM when you floor it with the ECT switched to normal, you need to have it serviced, because I 100% guarantee that something is wrong with it. Guarantee. Either you need to disconnect the battery for 15 minutes to clear the learned shift pattern in the ECU, or something else is wrong with it.
Here's some quotes from other threads regarding ECT Power vs Normal, and some of these members were also bringing their cars to drag strips and comparing their 1/4mi times to test the different modes:
**Some posts edited to removed other unrelated topics that were being discussed in their respective threads
Originally Posted by Kurtz
Normal is the fastest
ECT-Power can make the car feel faster in part throttle driving, but if you're just gonna floor it normal's better.
ECT-Power can make the car feel faster in part throttle driving, but if you're just gonna floor it normal's better.
Originally Posted by larsdenner
The ECT button has been around on Toyotas as long as I can remember.
...
Full throttle upshifts are unchanged as they are always near redline.
...
Full throttle upshifts are unchanged as they are always near redline.
Originally Posted by Koz
At WOT [Wide Open Throttle] it doesn't matter weather the PWR ECT is on or off but it does help if you are playing on the street.
Originally Posted by combfilter
At WOT[WIDE OPEN THROTTLE] your car is going to shift at the same point regardless of ect on or off.
And lastly, this member went all out when evaluating ECT modes and connected a laptop with performance software to his car. He accelerated using full throttle in all three different modes (Normal, Power, Snow) and found out that his IS350 actually shifted at a slightly lower RPM in Power mode than it did in Normal. The difference of 115 RPM is negligible and would only really be measurable at a drag strip, as that small margin obviously is hardly going to affect vehicle speed.
Originally Posted by Gernby
Are you guys ready for a real shocker?! It turns out that the shift points are different for each ECT mode (Snow, Normal, and PWR) when in automatic mode. However, to my extreme surprise, the mode that shifts at the highest RPM is Normal! Peak RPM in Snow mode is 6260. For Normal mode it shifts as high as 6625, and PWR mode it shift as high as 6510. It also seems to shift at a lower RPM in 1st gear than in 2nd gear for all 3 modes.
Last edited by Mbodall; 06-20-18 at 07:38 AM.
06-20-18, 07:41 AM
#65
And lastly, this member went all out when evaluating ECT modes and connected a laptop with performance software to his car. He accelerated using full throttle in all three different modes (Normal, Power, Snow) and found out that his IS350 actually shifted at a slightly lower RPM in Power mode than it did in Normal. The difference of 115 RPM is negligible and would only really be measurable at a drag strip, as that small margin obviously is hardly going to affect vehicle speed.
06-20-18, 08:00 AM
#66
Ha, tip of the iceberg. Unfortunately, it’s not even as simple as that. If you want to get a headache, search in all models here in CL for keywords like “shift”, “peak hp”, “optimum gear”, “optimum shift rpm”. Don’t plan on getting a clearer understanding of this unless you have at least a solid 30-45 minutes to read about this lol.
06-20-18, 04:00 PM
#70
Lexus Test Driver
does the owners manual provide a quantity?
it should be about the same amount when you drain the pan
Why do you ask this question?
are you trying to figure out how much fluid to purchase?
BTW, this only applies to the five speed models...you cannot adjust the pressure switch on the six speeds.
Do you have a five or six speed.
it should be about the same amount when you drain the pan
Why do you ask this question?
are you trying to figure out how much fluid to purchase?
BTW, this only applies to the five speed models...you cannot adjust the pressure switch on the six speeds.
Do you have a five or six speed.
Last edited by Bgw70; 06-20-18 at 04:05 PM.
06-27-18, 07:32 AM
#72
Test your car again and see if it only shifts at/near redline when in ECT power... if so your TPS might be bad or your ECU might need to be reset.
06-27-18, 08:23 AM
#73
Pole Position
2.) causes the transmission to hold gears longer before upshifting/upshift at higher RPM than it would normally under the same amount of throttle applied.
That's all the point I want to bring up.
Yes, I read your post. I don't drive with ECT PWR so it's not a concern for me.
My transmission is working fine, thanks for the concern. Cheer !!!!
Last edited by GmanSC; 06-27-18 at 08:45 AM.
06-27-18, 10:01 AM
#75
"Item 2 in my list refers to anything less than full throttle acceleration."
And you said: