Im completely stumped :(
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 128
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From: NJ
Im completely stumped :( Okay i dont know much about transmissions so the information i give could be vague..
So in my A4 everytime it shifts gears my wheels completely lock. As in COMPLETELY stops moving like i hit the brakes hard for less then a second...
At first i didnt mind it but since its my DD its starting to annoy me..
Does anyone have ANY idea why my wheels completely lock after every gear shift? it feels the most from 1st to 2nd gear but its still noticable threw every other gear change.
info: a few bolt ons like heads, cam, lid,LTs, 2600 lock-up TC that make 445hp on a dynojet
At first i thought the reason it was called a lock-up TC was cause it made the wheels lock but thats not looking right.. another reason was cause i thought i needed a bigger TC stall but i just have no idea
any help will be greatly appreciated and please dont flame my noob-ness
So in my A4 everytime it shifts gears my wheels completely lock. As in COMPLETELY stops moving like i hit the brakes hard for less then a second...
At first i didnt mind it but since its my DD its starting to annoy me..
Does anyone have ANY idea why my wheels completely lock after every gear shift? it feels the most from 1st to 2nd gear but its still noticable threw every other gear change.
info: a few bolt ons like heads, cam, lid,LTs, 2600 lock-up TC that make 445hp on a dynojet
At first i thought the reason it was called a lock-up TC was cause it made the wheels lock but thats not looking right.. another reason was cause i thought i needed a bigger TC stall but i just have no idea
any help will be greatly appreciated and please dont flame my noob-ness
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 128
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From: NJ
sorry man i have no idea what that means.. im still learning 
When i hit the pedal from first when i shift into second it does make a "churp" noise but when im just crusing and it shifts it feels like im braking hard
When i hit the pedal from first when i shift into second it does make a "churp" noise but when im just crusing and it shifts it feels like im braking hard
TECH Apprentice
Joined: Mar 2011
Posts: 392
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From: osawatomie ks
Is it actually throwing you forward in your seat like you stomped on the brakes??? I have never heard of a auto trans doing anything like that. I think maybe you mite be confusing the impact of it engagging 2nd gear with what you believe to be locking up the tires. You had it dyno tuned and you have a stall your tunner tuned for it to ensure good firm shifts for max preformance. That my opinion but if your that worried about it find a reputable shop to check it out
i cant really think of a reason why it would feel like hitting brakes. does it slow you down? do u notices the speedometer dropping mph? Are you sure its not just a good hard shift?
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 128
Likes: 0
From: NJ
Is it actually throwing you forward in your seat like you stomped on the brakes??? I have never heard of a auto trans doing anything like that. I think maybe you mite be confusing the impact of it engagging 2nd gear with what you believe to be locking up the tires. You had it dyno tuned and you have a stall your tunner tuned for it to ensure good firm shifts for max preformance. That my opinion but if your that worried about it find a reputable shop to check it out
The person who tuned my car does all LSx work and he didnt even notice the hard shift.. Im really just trying to figure out what the hell it is
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On The Tree
Joined: Feb 2011
Posts: 128
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From: NJ
I never had a car with this much power so im not sure if this is normal
you would know it if you felt it, im turbo 350 trans shifted so damn hard you would think it was gonna rip out the car. hard shift is ok but it should be crisp as well, ive never felt like the brake were being hit. it shouldnt throw you forward. video may help any other tranny work besides the converter?
TECH Apprentice
Joined: Mar 2011
Posts: 392
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From: osawatomie ks
Your gonna be better off to have it checked out we arent gonna be able to diagnose it over the internet. I really think what you are feeling is a drop in acceleration just be for the tranny shifts immedeatly followed by the impact of a good quality shift. But like i said its not going to hurt anything to have it checked out by a shop
I think that PCM may have some insanely high line pressure for shifts...coupled with a shift kit.
I had a GTP (yes i know, be nice) and it would shift real hard with performance shift mode and a tune in the PCM.
I had a GTP (yes i know, be nice) and it would shift real hard with performance shift mode and a tune in the PCM.
[QUOTE=TImmy_Jones;14939570]I think that PCM may have some insanely high line pressure for shifts...coupled with a shift kit.QUOTE]
This^^^^
I have a built a4 with a shift kit and mine does this at low rpm shifts (under 2500 or a bit less) but not as dramatically as the op is describing....
Edit: Mine does it worse in 3 for some reason....
This^^^^
I have a built a4 with a shift kit and mine does this at low rpm shifts (under 2500 or a bit less) but not as dramatically as the op is describing....
Edit: Mine does it worse in 3 for some reason....
Last edited by SOMbitch; May 21, 2011 at 10:23 AM.
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 128
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From: NJ
I cant upload any home videos...
I guess its just a hard shift or something.
When i had my friend record my car driving by it looked like it shifted as hard as a corolla
Yet the video of inside the car you can hear the shift and see the camera jerk
I guess its just a hard shift or something.
When i had my friend record my car driving by it looked like it shifted as hard as a corolla
Yet the video of inside the car you can hear the shift and see the camera jerk
Thread Starter
On The Tree
Joined: Feb 2011
Posts: 128
Likes: 0
From: NJ
you would know it if you felt it, im turbo 350 trans shifted so damn hard you would think it was gonna rip out the car. hard shift is ok but it should be crisp as well, ive never felt like the brake were being hit. it shouldnt throw you forward. video may help any other tranny work besides the converter?
