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4eat at 4200 or so rpm, what happens?
Posted 07 May 2002 - 05:54 PM
As mentioned in another post I regularly use the manual button to keep the tranny in the specific gear which keeps the engine in the optimum rpm.
I have noticed that under heavy load and wot at around 4200 rpm the vehicle acceleration remains constant but the rpms drop back to 4050 then continue to climb again.
I can repeat this fairly regularly. There are two hills I drive on almost every day that make this most noticable and it happens almost every time, usually the reason it doesnt is that I get someone doing 50mph up the hill.
Posted 07 May 2002 - 06:10 PM
under WOT I have had it shine all the way to one "green bar" shy of the redline in automatic shifting "D" position in the first 2 gears...........
impressive for an automaitc system.
Total random paralell:
Did'ja know that the Satruns have a built in "neutral" WOT limiter at 4K RPMs? its kinda kool to thinka bout, no worry of redlining in Neutral.
Posted 07 May 2002 - 06:19 PM
Posted 07 May 2002 - 06:19 PM
And a lot of cars now have rpm limiters. A few years ago we had someone drive 45 miles to the dealership to complain that when he floored his Lumina/Corsica type car in Park or Neutral it wouldn't rev over 3,500. Well YEAH!!!! Read your owners manual, they make it do that so you can't abuse the engine, why would you want to in the first place???
Posted 07 May 2002 - 07:27 PM
How can you tell that to me, when I do it every single day at least 10 times. Literally.
Now from three replies you have mentioned the torque convertor locking. I had thought this as well but everyone jumps in my **** when I try to mention the torque convertor and the manual button at the same time.
Notice I only see this in manual mode. And it always happens in third gear.
1. The torque convertor does not lock in third gear under normal driving condition
2. I see this behavior only when in manual mode
If both of the above are true than it must mean the manual button locks the torque convertor under certain circumstances.
But wait, everyone will kill me for proposing this. I guess we will see. If i could get my dang volt meter working properly Id try to prove it by monitoring the line voltage of the solenoid that locks the clutch.
Posted 07 May 2002 - 07:41 PM
Posted 07 May 2002 - 09:06 PM
Posted 08 May 2002 - 09:14 AM
i have noticed a similar thing on my 93 as you describe only when in 3rd and at about 3300-3400rpm, i have always just assumed it was the tach as i cant hear any change in the exhaust note ot such to indicate an rpm change.
Posted 08 May 2002 - 12:14 PM
blackmxz: Your description on the manual button does not match how mine functions.
If I have the manual button depressed with 3 selected and Im between 2500 and redline the vehicle will stay in third no matter if the accelerator is at zero or wot. If im in second and have the manual button the car will stay in second from idle rpm to redline.
Posted 08 May 2002 - 01:22 PM
Posted 08 May 2002 - 01:46 PM
Anyone know of shareware or other software that will let me cut the beginning few seconds and ending seconds from a video clip? It might be hard for me to start and stop the video all the time.
Posted 08 May 2002 - 07:29 PM
Posted 08 May 2002 - 08:00 PM
Im still trying to figure out where I can mount the camera so it can see the dash. It looks as if the best spot would be right in the center of my chest! I was thinking of taping a ruler to the top of the stearing console, but then duhh I wouldnt be able to turn
Posted 08 May 2002 - 08:48 PM
Posted 09 May 2002 - 04:46 AM
Posted 09 May 2002 - 08:29 AM
Posted 09 May 2002 - 01:01 PM
CipeR: "How can you tell that to me, when I do it every single day at least 10 times. Literally".
I can tell you that because thats exactaly how it works! Do you have your owners manual? It states exactaly how all of these features work, and there have been no major changes to the 4EAT over the years.
If you have a lower gear selected and you tach out the engine the trans. should shift to the next highest gear, this is a safety feature. Perhaps whatever sensor that tells the car to shift when overreved is not working in your car.
Posted 09 May 2002 - 01:31 PM
It may very well be that the tranny will shift to thge next highest gear when you hit redline, but if you are hitting redline you are a fool, that is not the best shift point.
I dont care if you try to tell me it works another way, mine and at least one other work the way I explain and it doesnt contradict what the manual says.
Im telling all of you this. If you are at say 65 mph and you floor the gas while in d or 3 it will shift to second. If you put the car in 3 and press the manual button then floor the gas it will STAY IN THIRD.
My point to using the manual button in this way is to keep the engine in its optimum rpm range.
Posted 09 May 2002 - 06:13 PM
When in 3 and manual button selected....it will choose between gears 2 and 3. When in 2 and manual button selected.....it will remain in 2nd gear.
Again....if you hold down the gas.....it will shift at redline as a safety precaution.
Posted 09 May 2002 - 07:43 PM
NO IT WONT. This is what I keep trying to tell you, it will not downshift to 2.
When in 3 and manual depressed you are right that it will choose between 2 and 3, but once you get above maybe 40 (havnt checked exactly yet) it will not downshift to 2.
Posted 09 May 2002 - 07:47 PM
I'm looking for that info in the FSM. I can't seem to find it now. I know it's in there......there's just too much damn info to try and sort through and remember where everything is......
Posted 10 May 2002 - 08:49 AM
Posted 10 May 2002 - 02:01 PM
Posted 10 May 2002 - 02:03 PM
Posted 10 May 2002 - 02:32 PM
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