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Post by stevensolds on Mar 24, 2005 15:11:43 GMT -6
the fluid change was fine. I dropped the car off and about 2 hours later they called me to come get it.
Its doing noticeably better. It still however makes that sort of high pitch whine when you put it into drive when cold, but when warm its absolutely smooth. I got it up to operating temp today and floored it, smooth and seamless shifting. It still does the whoosh in 1st and 2nd gear, but i guess thats cause Torque Management is disabled and it stresses the tranny a little bit.
Im assuming the filter was plugged up and they said it should have been done at 50k and not wait this long....hmm. Well if i had the car all that time i would have....duh.
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Post by oldsauroraman1 on Mar 24, 2005 16:06:54 GMT -6
Good. Glad to hear it went well. Hopefully it will hold out for you for a good 200x.
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Post by Custom88 on Mar 25, 2005 8:53:15 GMT -6
the fluid change was fine. I dropped the car off and about 2 hours later they called me to come get it. Its doing noticeably better. It still however makes that sort of high pitch whine when you put it into drive when cold, but when warm its absolutely smooth. I got it up to operating temp today and floored it, smooth and seamless shifting. It still does the whoosh in 1st and 2nd gear, but i guess thats cause Torque Management is disabled and it stresses the tranny a little bit. Im assuming the filter was plugged up and they said it should have been done at 50k and not wait this long....hmm. Well if i had the car all that time i would have....duh. 1. the whining is usually a sign of a transmission that is perminently damaged from either A.) Abuse or B. Neglect 2. Torque management is not disabled. You can't disable it unless you have an aftermarket PCM. 3. "Doctor it hurts when I go like THIS." "well then son, Don't DO THAT!" If the transmission makes those bad noises when going WOT, then don't go WOT. I wouldn't keep doing it to see if it goes away because more like likely if it didn't go away with a fluid change, it isn't going to.
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Post by stevensolds on Mar 25, 2005 9:10:10 GMT -6
It only does it when cold. When warm it just goes into gear and the car moves forward.
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Post by Custom88 on Mar 25, 2005 9:22:26 GMT -6
It only does it when cold. When warm it just goes into gear and the car moves forward. I was referring to the "whoosh" in 1st and 2nd gear.
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Post by JimW on Mar 25, 2005 9:41:07 GMT -6
I know we've talked about this...but I thought I read somewhere...when the 4t80E is put in 2nd gear TQ manangement was disabled... I recall when I was doing an AutoTap run with Martin (OlBlueEyes) and Todd Allen (Rogue) from BonnevilleClub in the Aurora, Todd fired up AutoTap on his laptop and we plugged it into the OBD2 port, apparently the car has to be in 2nd gear because TQ management is disabled...this was over a year ago now, but I coulda swore we were talking about that... oh well...guess we were wrong.
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Post by oldsauroraman1 on Mar 25, 2005 9:43:18 GMT -6
What is "Torque Management" and what does it do?
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Post by Aurora40 on Mar 25, 2005 10:17:00 GMT -6
I know we've talked about this...but I thought I read somewhere...when the 4t80E is put in 2nd gear TQ manangement was disabled... I recall when I was doing an AutoTap run with Martin (OlBlueEyes) and Todd Allen (Rogue) from BonnevilleClub in the Aurora, Todd fired up AutoTap on his laptop and we plugged it into the OBD2 port, apparently the car has to be in 2nd gear because TQ management is disabled...this was over a year ago now, but I coulda swore we were talking about that... oh well...guess we were wrong. Hey Jim, is there a value that shows up in the AutoTap for torque management? Or did you look for ignition timing retard, etc to point to it? I believe nothing will disable torque management, because it is intended to save the transmission. I believe it mainly prevents wheelspin when launching, since this is bad for an open differential (3800 S/C owners know all about that). It also lowers the engine power right at the shift point to put less stress on the tranny. From my understanding, the main thing the 2nd gear trick does is to raise the shift pressure, quicken the shift, and it also seems to wait until closer to the fuel cutoff before shifting. Torque management affects the engine, I believe the 2nd gear trick mainly affects the transmission. I'm speculating, though. But I wouldn't imagine the stock programming would ever disable torque management.
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Post by Aurora40 on Mar 25, 2005 10:19:42 GMT -6
In general, changing your tranny fluid is about as likely to fix tranny problems as changing your oil is to fix engine problems, or brushing your teeth is to fix cavities.
You change the fluid to prevent future problems, not to fix existing ones. The only thing I could see it fixing was if you never bothered to check the fluid level, and in the process of having it changed it went from being underfilled to being appropriately filled. Underfilling on some trannies can cause less than ideal shifting behavior.
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Post by oldsauroraman1 on Mar 25, 2005 10:23:24 GMT -6
Thanks for the information Aurora 40. Fascinating.
Another plus of changing fluid is that if the valves are sticking in the valve body, new fluid may very well help, especially with a flush change.
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Post by stevensolds on Mar 25, 2005 10:24:06 GMT -6
I hope it aint F'ed. Im not gonna worry about it too much thouigh,i have been going easy on it, mainly to save my gas.
I am getting my fuel injectors flushed and cleaned out on Tuesday. They do a 3-step program with that includes cleaning the TPS since my pedal sticks once in a while.
I dont want to blow the tranny. But it was doing this whining stuff when you put it into gear, and the whoosh thing ever since i got it. Its always done that. I dont use 1st or 2nd that much anyway, mainly because of that. In (D) Overdrive it doesnt do that at all. It just seamlessly shifts, nice and smooth.
However i have been doing the 1 wheel burnouts, mostly on accident. Its only when turning though, that it does it. I always turn off traction control, so maybe thats why. I hate traction control, except when its raining. It just doesnt feel right, and i had to slam the brake one time when traction was active, and the brake pedal wouldnt go down at all so i almost rear ended the car in front of me.
I turned yesterday, trying to get out onto this busy intersection, and i pressed it prettyh ard, but i dont think it was all the way down. At least, i didnt intend to. It sat there and spun it through the powerband and blue smoke from the tires was all behind me. The people on the side of the road mustve thought i have a really powerful car lol.
Does the front wheel burnouts hurt the Aurora as much as it does the 3800 series engines???
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Post by Aurora40 on Mar 25, 2005 10:33:34 GMT -6
Does the front wheel burnouts hurt the Aurora as much as it does the 3800 series engines??? One-wheel burnouts hurt any open differential. I think this is mainly due to the heat created, and speed of the internal components when only one side is turning. I believe this is as true on RWD cars with open diffs as on FWD cars with them, though on FWD cars the diff is in the transaxle, so it may actually be worse for them, as a RWD diff is by itself, has a lot of fluid and usually heatsinks to cool it. I believe it's not so much if it is as bad for one vs the other as it is about which transaxle is more robust. It may be that the 4T80-E can take more (or less) abuse than the 4T65-E, rather than that it is more (or less) abusive. Also, the 3800 S/C has more sheer low-end grunt with which to burn out, thus raising the abusiveness a notch.
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Post by stevensolds on Mar 25, 2005 11:21:58 GMT -6
It would be nice if the Aurora came with the option of a manual 5-speed
Thanks for the insight though. gonna take that into consideration
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Post by Aurora40 on Mar 25, 2005 11:32:33 GMT -6
It would be nice if the Aurora came with the option of a manual 5-speed A 5-speed would still probably have an open differential. Not many front wheel drive cars come with limited slip diffs. I think Acura uses them on the TL S-type 6-speed, the Olds Achieva SCX W-41 (a car I still think would be cool to own) had one, and I'm sure there are a few others, but it's not a common thing on FWD.
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Post by stevensolds on Mar 25, 2005 14:53:31 GMT -6
Well if i ever have to replace the tranny, i will get the bulletproof then get the true Limited Slip option.
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