auto trans slips after turning
Thread Starter
Cruising
Joined: Mar 2005
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From: Chico CA
auto trans slips after turning
I've seen this problem posted before but can't find the thread. I have a Z51/auto and if I shift to 3rd and make a right turn at about 40 mph as I accelerate out of the turn the trans slips. It has been to the dealer once and goes back on Monday for diagnosis work. Low fluid was suggestted on the other thread and to the dealer. Thanks for the help.
Racer
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From: Horsepower is how fast you hit a wall, torque is how much of the wall you take with you Jacksonville, Florida
St. Jude Donor '05
I believe the forum member datawiz has the problem you are speaking of he has talked about an issue like that a while back, I am not sure of his resolution if any he found.
Racer
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From: Horsepower is how fast you hit a wall, torque is how much of the wall you take with you Jacksonville, Florida
St. Jude Donor '05
This is the starter thread from datawiz that spoke of a problem like that:
http://forums.corvetteforum.com/show....php?t=1025901
http://forums.corvetteforum.com/show....php?t=1025901
Thread Starter
Cruising
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From: Chico CA
Thanks, 400/400.
Datawiz has not had time to get his to the dealer.
I got mine back today and the fluid level was fine. There was no code found. They pulled the trans pan and found "stuff" in the valve body. Cleaned the valve body, put in a new filter, and refilled. So far everything seems fine. I'll have to turn fast and accelerate to make sure.
Datawiz has not had time to get his to the dealer.
I got mine back today and the fluid level was fine. There was no code found. They pulled the trans pan and found "stuff" in the valve body. Cleaned the valve body, put in a new filter, and refilled. So far everything seems fine. I'll have to turn fast and accelerate to make sure.
Last edited by Bruce C6; Apr 7, 2005 at 01:24 AM.
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Originally Posted by Bruce C6
Thanks, 400/400.
Datawiz has not had time to get his to the dealer.
I got mine back today and the fluid level was fine. There was no code found. They pulled the trans pan and found "stuff" in the valve body. Cleaned the valve body, put in a new filter, and refilled. So far everything seems fine. I'll have to turn fast and accelerate to make sure.
Datawiz has not had time to get his to the dealer.
I got mine back today and the fluid level was fine. There was no code found. They pulled the trans pan and found "stuff" in the valve body. Cleaned the valve body, put in a new filter, and refilled. So far everything seems fine. I'll have to turn fast and accelerate to make sure.
Melting Slicks
Joined: Nov 2003
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From: Ridgeland MS
St. Jude Donor '06-'07-'08-'09-'10-'11
The problem could actually be in the rear end unit. The limited slip differential disengages on one side durring the turn. When you come out of the turn in 3rd, significant power is applied to the drive train. My guess is that the limited slip system is not re-engaging properly and you feel it slip.
Bill
Bill
Melting Slicks
Joined: Dec 2003
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From: Near Jacksonville Fl.
Originally Posted by dollarbill
The problem could actually be in the rear end unit. The limited slip differential disengages on one side durring the turn. When you come out of the turn in 3rd, significant power is applied to the drive train. My guess is that the limited slip system is not re-engaging properly and you feel it slip.
Bill
Bill
Your limited slip has a clutch pack on both sides that are spring loaded and all it does is allow the wheel with the shortest turning radius to slip that clutch pack.
You could completly wear out both clutch packs and it would still drive like a normal car with an open diff.
Burning Brakes
Joined: Jan 2005
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From: Camp Casey Korea/Austin Tx
It just happened to me!
Exiting from a highway onto a clover-leaf turn and I really turn in hard at about 45. The car pulled .95 to .96 G's for about a 1 second and I tryed to accelerate at that point, only the engine just rev'ed like it was in neutral. I even goosed the throttle several times and same thing, rev'ing. I coasted down to about 25 and wasn't even turning that hard anymore, maybe about .3 and goosed the throttle again and same thing!
Pretty dangerous if you ask me. It took about another second for the transmission to engage again and everything was normal. From start to end the engine did not propel the car for about 4 seconds with the last second pretty much steering straight.
I wonder if it is a trans fluid issue?
Exiting from a highway onto a clover-leaf turn and I really turn in hard at about 45. The car pulled .95 to .96 G's for about a 1 second and I tryed to accelerate at that point, only the engine just rev'ed like it was in neutral. I even goosed the throttle several times and same thing, rev'ing. I coasted down to about 25 and wasn't even turning that hard anymore, maybe about .3 and goosed the throttle again and same thing!
Pretty dangerous if you ask me. It took about another second for the transmission to engage again and everything was normal. From start to end the engine did not propel the car for about 4 seconds with the last second pretty much steering straight.
I wonder if it is a trans fluid issue?
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Le Mans Master
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From: Just moved back to the "old country"
I too found this problem FRIDAY when I was pulling hard Gs at high speed coming off a cloverleaf ...
BruceC6 - please test yours out as soon as you can to see if that solved the problem - for some reason I don't think it will ... I am wondering if there is a problem with how the trans is programmed.
Those of you with Autos - you may want to try this and if you have the problem too ..
BruceC6 - please test yours out as soon as you can to see if that solved the problem - for some reason I don't think it will ... I am wondering if there is a problem with how the trans is programmed.
Those of you with Autos - you may want to try this and if you have the problem too ..
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Yes Bruce, I'm waiting for the test results! If your dealer found it, I will be in first thing next week.
Thanks
Thanks
Team Owner
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Not that this problem is fun to have, but it's nice to see that I'm not the only one having this problem. I too think this is a big deal.
Racer
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From: Horsepower is how fast you hit a wall, torque is how much of the wall you take with you Jacksonville, Florida
St. Jude Donor '05
I have been reading about this on and off from datawiz and have tried to replicate it several times. 2 days ago I pulled a hard turn at 47 mph pulled it to .97Gs and then stomped on it after the back end straightened out and the tires chirpped a bit and then just rocketted off to 110 before letting off and not for an instant did my engine rev like that or my tranny not engage. I have tried both in normal mode and competive driving mode and can not replicate this issue. I also have Z51 but I dont see how that makes any difference anyway. Now I see others are having this problem now and it makes me very curious as to what is going on with your cars. I wonder if it could be that the fluid level going through such a high G turn could be shiffting to the point in the tranny that it is not allowing it to engage properly until the fluid level settles out? I hope ya'll figure this out and I hope it isn't a problem that can just start happening because this doesn't sound like a good thing to have happen at all. 
I guess time will tell until someone out there figures it out and then passes it on.
I guess time will tell until someone out there figures it out and then passes it on.
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Originally Posted by Corvette400400
I have been reading about this on and off from datawiz and have tried to replicate it several times. 2 days ago I pulled a hard turn at 47 mph pulled it to .97Gs and then stomped on it after the back end straightened out and the tires chirpped a bit and then just rocketted off to 110 before letting off and not for an instant did my engine rev like that or my tranny not engage. I have tried both in normal mode and competive driving mode and can not replicate this issue. I also have Z51 but I dont see how that makes any difference anyway. Now I see others are having this problem now and it makes me very curious as to what is going on with your cars. I wonder if it could be that the fluid level going through such a high G turn could be shiffting to the point in the tranny that it is not allowing it to engage properly until the fluid level settles out? I hope ya'll figure this out and I hope it isn't a problem that can just start happening because this doesn't sound like a good thing to have happen at all. I guess time will tell until someone out there figures it out and then passes it on.
I guess time will tell until someone out there figures it out and then passes it on.
Thread Starter
Cruising
Joined: Mar 2005
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From: Chico CA
Hi, Still seems to be fine. More miles will tell. One of the reasons I like new Vettes is I'm no mechanic, but how would turning effect a relay?
Were as fluid (dirt in the fluid) would move with turns
Were as fluid (dirt in the fluid) would move with turns
Le Mans Master
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From: Just moved back to the "old country"
Bruce - say more - what do you mean by "still seems fine"? Did you try the high speed G force turn as before and NOT have the problem any more? Did you try it more than once?? Inquiring minds want to know.
Pro
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I have not had any problem but my I would think if you are driving the car hard other than a drag strip you would down shift or up or
down shift in to gear for your speed, if it would down shift comming out of a turn into a lower gear you would loose control.
down shift in to gear for your speed, if it would down shift comming out of a turn into a lower gear you would loose control.
