Coasting in the ISx50 Auto
#16
Rookie
Thread Starter
Originally Posted by integlikew
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.
If im going 30-35 mph and I see a red light 100 yards up Im taking my foot off the gas and coasting in so I dont use brake as much. My point is that the tranny does not let you. Wouldnt it be more efficient to let the car roll?
Anyways basically its really hard to judge when to let off the gas compared to my other cars.
#17
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.
In regular auto mode transmission holds the gear pretty good.
In sport/ect the transmission holds the gear extremely well, I have to tap the accelerator or paddle shifter to get it into a lower gear.
Like I have stated in this forum before, I Love this car!!!! Especially, because of the transmission among other things.
#18
Originally Posted by Heltah
Im pretty sure its using more gas at 3k vs 1k.
So in a true manual, if you want to save gas you would engine brake all the time. But brake pads are cheaper to replace than motors.
If im going 30-35 mph and I see a red light 100 yards up Im taking my foot off the gas and coasting in so I dont use brake as much. My point is that the tranny does not let you. Wouldnt it be more efficient to let the car roll?
Last edited by The Chad; 07-27-06 at 07:53 PM.
#19
Lexus Champion
Originally Posted by The Chad
You are if you are accelerating or maintaining a certain speed, but a modern engine, if you let off of the gas, will coast and use absolutely no fuel at all. So if you downshift and coast, no matter where your engine rpms are, as long as the injectors aren't maintaining idle so the engine doesn't stall, you are using no fuel. What I mean by that is at 3k rpm, with no foot on the gas coasting, you are using no gas. But if you are in neutral, and the engine has to give it power so the rpms don't fall below stall speed, you are using gas.
#20
Very good feature. I like it a lot and think it actually doesnt hold the gear enough and doesnt engine brake enough when I let off the gas.
Anyone try driving the Jeep Grand Cherokee SRT-8 or any heavy engine BMW automatic, 8 cylindars or more? When you let off the gas at high RPMs it holds its gear so well and enging brakes soo much it feels like you slammed on the brakes... it'll throw you through the windshield.
Anyone try driving the Jeep Grand Cherokee SRT-8 or any heavy engine BMW automatic, 8 cylindars or more? When you let off the gas at high RPMs it holds its gear so well and enging brakes soo much it feels like you slammed on the brakes... it'll throw you through the windshield.
#21
When I go down my hill, the engine always kicks down a gear when I tap on my breaks. but the best thing i've found out about it, is that it maintains the speed at 45-50mph...it won't go any higher or lower than that. so I never have to worry about speeding =P But if I don't tap on my breaks, my engine won't shift down, and I'll hit up to 65mph if I don't use my breaks.
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