Coasting in the ISx50 Auto
#1
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Coasting in the ISx50 Auto
Ive noticed that my IS250 auto actually downshifts and slows you down when coasting with foot off the gas.
Its even worse coasting downhill. I take my foot off the gas, while going down hill the car will actually speed up alittle then the tranny downshifts and my rpm shoots up to 3k and I start to slow down.
My $5,000 Ford ranger can coast farther without gas.
Is it just me? I would tap the brake if I wanted to slow down. It seems to be ok with the slightest pressure on the gas pedal, but I shouldnt have to do that.
Has anyone else noticed this? Is it the same with the 350?
Is it some computer/tranny safety feature?
Its even worse coasting downhill. I take my foot off the gas, while going down hill the car will actually speed up alittle then the tranny downshifts and my rpm shoots up to 3k and I start to slow down.
My $5,000 Ford ranger can coast farther without gas.
Is it just me? I would tap the brake if I wanted to slow down. It seems to be ok with the slightest pressure on the gas pedal, but I shouldnt have to do that.
Has anyone else noticed this? Is it the same with the 350?
Is it some computer/tranny safety feature?
#2
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Originally Posted by Heltah
Ive noticed that my IS250 auto actually downshifts and slows you down when coasting with foot off the gas.
Its even worse coasting downhill. I take my foot off the gas, while going down hill the car will actually speed up alittle then the tranny downshifts and my rpm shoots up to 3k and I start to slow down.
My $5,000 Ford ranger can coast farther without gas.
Is it just me? I would tap the brake if I wanted to slow down. It seems to be ok with the slightest pressure on the gas pedal, but I shouldnt have to do that.
Has anyone else noticed this? Is it the same with the 350?
Is it some computer/tranny safety feature?
Its even worse coasting downhill. I take my foot off the gas, while going down hill the car will actually speed up alittle then the tranny downshifts and my rpm shoots up to 3k and I start to slow down.
My $5,000 Ford ranger can coast farther without gas.
Is it just me? I would tap the brake if I wanted to slow down. It seems to be ok with the slightest pressure on the gas pedal, but I shouldnt have to do that.
Has anyone else noticed this? Is it the same with the 350?
Is it some computer/tranny safety feature?
#3
Its A Great Feature
Yes, in my 350 it does this as well; personally, I like it. It comes in handy, especially when your trying to maintain a set speed. Quite frankly, the IS' auto-tranny is one of the best, out of the many auto trannies, that I have ever driven.
#4
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Thread Starter
Originally Posted by Chi-town
Yes, in my 350 it does this as well; personally, I like it. It comes in handy, especially when your trying to maintain a set speed. Quite frankly, the IS' auto-tranny is one of the best, out of the many auto trannies, that I have ever driven.
How does it help you maintain a set speed if it purposefully slows you down?
I can coast twice as far in my Ford ranger P'up from 30mph-0mph.
#5
Lexus Champion
Originally Posted by Heltah
How does it help you maintain a set speed if it purposefully slows you down?
#6
Super Moderator
I imagine that Lexus' intention is to make the transmission feel more like a manual, in that you can slow down for a turn or for slower traffic without having to hit the brake.
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#8
I really like that feature. I have a hard enough time keeping the car under 80mph on a flat road, I like the fact that it slows you down going down hill.
I've also noticed that it keeps downshifting as you approach red lights.
I think if you want to coast down a long hill you could just put it in nutral or manual.
When I was young I used to see how far I could coast. I went from the top of the 101 near Univeral, exited Highland, turned right onto franklin and then finally came to a stop after about three blocks on Franklin. I don;t know how many miles it was but it was really fun! THe right turn on franklin was a challenge because it was high speed, but I didn't want to loose too much momentumthrough it.
~Jay
I've also noticed that it keeps downshifting as you approach red lights.
I think if you want to coast down a long hill you could just put it in nutral or manual.
When I was young I used to see how far I could coast. I went from the top of the 101 near Univeral, exited Highland, turned right onto franklin and then finally came to a stop after about three blocks on Franklin. I don;t know how many miles it was but it was really fun! THe right turn on franklin was a challenge because it was high speed, but I didn't want to loose too much momentumthrough it.
~Jay
#9
First of all, it depends which mode your tranny is in. If you want to coast further, select the SNOW mode!
Second, just because you're at 3,000 rpms doesn't mean you're burning gas. In fact you're not.
Second, just because you're at 3,000 rpms doesn't mean you're burning gas. In fact you're not.
#10
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Another part of this is that as it downshifts it's using the ratio of the lower gear to turn the crank so the injectors stop dumping fuel in, that way you're not really using any fuel while coasting. Done by design for fuel economy. If you use cruise or you're coasting with your foot on the gas you are using much more fuel.
#11
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Thread Starter
Originally Posted by cdeslandes
First of all, it depends which mode your tranny is in. If you want to coast further, select the SNOW mode!
Second, just because you're at 3,000 rpms doesn't mean you're burning gas. In fact you're not.
Second, just because you're at 3,000 rpms doesn't mean you're burning gas. In fact you're not.
Im pretty sure its using more gas at 3k vs 1k.
Originally Posted by t0e
I drive along hills every day, and I do let it coast on down slopes--it never down shifts on me unless I touch the gass pedal. Even When I let it coast at 80mph as long as its a good down slope the gear never shifts down. --paul
#12
Lexus Champion
Originally Posted by Heltah
How does it help you maintain a set speed if it purposefully slows you down?
I can coast twice as far in my Ford ranger P'up from 30mph-0mph.
I can coast twice as far in my Ford ranger P'up from 30mph-0mph.
#13
in snow mode you will take off in 2nd gear and the tranny is run at earlier shift timing and lower pressure. i wouldnt recommend driving in snow mode. Its not good for the tranny to be pushed in snow mode. Not only does the tranny take off in 2nd but also is softer shifting wich is made for easy or slow accel in snow. Stepping on it on the street or even normal street driving is not going to be good in snow mode. To much torque on the tranny with the low pressure in the trans (due to snow mode soft shifting) will cause the clutchs to slip and take longer to shift which will result in clutchs wearing out sooner. Just not recommened.
#14
Originally Posted by Jay M
I really like that feature. I have a hard enough time keeping the car under 80mph on a flat road, I like the fact that it slows you down going down hill.
I've also noticed that it keeps downshifting as you approach red lights.
I think if you want to coast down a long hill you could just put it in nutral or manual.
When I was young I used to see how far I could coast. I went from the top of the 101 near Univeral, exited Highland, turned right onto franklin and then finally came to a stop after about three blocks on Franklin. I don;t know how many miles it was but it was really fun! THe right turn on franklin was a challenge because it was high speed, but I didn't want to loose too much momentumthrough it.
~Jay
I've also noticed that it keeps downshifting as you approach red lights.
I think if you want to coast down a long hill you could just put it in nutral or manual.
When I was young I used to see how far I could coast. I went from the top of the 101 near Univeral, exited Highland, turned right onto franklin and then finally came to a stop after about three blocks on Franklin. I don;t know how many miles it was but it was really fun! THe right turn on franklin was a challenge because it was high speed, but I didn't want to loose too much momentumthrough it.
~Jay
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Originally Posted by Jay M
When I was young I used to see how far I could coast. I went from the top of the 101 near Univeral, exited Highland, turned right onto franklin and then finally came to a stop after about three blocks on Franklin. I don;t know how many miles it was but it was really fun! THe right turn on franklin was a challenge because it was high speed, but I didn't want to loose too much momentumthrough it.
~Jay
~Jay