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Superyank 3500 doesn´t lock up need help.

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Old May 8, 2002 | 02:42 PM
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Default Superyank 3500 doesn´t lock up need help.

A friend of mine had a SY 3500 installed on his 96 C4 today.
It´s the same TC we use in our C5´s so I hope someone can help.

The TC seems not to lock up.
During driving in town (usually during 1500 and 3000rpm`s) it never locks up. Always stalls and brings up the tranny temp.

I have a high stall TC also and know that it unlocks under heavy load, but as soon as I let off the gas a bit it locks up again.

His doesn´t do that.

We stopped for a tank stop and after that it seems that it locks up, but as soon as you ease in the gas it unlocks again and stalls up to about 3500.
After some driving it never locks up again.


He´s very frustrated and want´s to put in the stock TC again as it´s not
possible to drive the car (especially in town) with a not locking TC (sounds like an always slipping clutch).

That are things my Tc doesn´t do, it´s still locked up, down to 1000 rpms....
and doesn´t unlock under acelleration and only unlocks if I really go heavy load.

Need urgent help!!!


Thanks,

Michael


[Modified by Austrian Vette, 7:44 PM 5/8/2002]
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Old May 8, 2002 | 05:19 PM
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Default Re: Superyank 3500 doesn´t lock up need help. (Austrian Vette)

ttt
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Old May 8, 2002 | 06:10 PM
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Default Re: Superyank 3500 doesn´t lock up need help. (Austrian Vette)

I know this is WAY OFF TOPIC but what trap speed did you have on your 10.3 sec pass? Thanks. :cheers:
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Old May 9, 2002 | 04:49 AM
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Default Re: Superyank 3500 doesn´t lock up need help. (Austrian Vette)

Just talked to my friend .
He sais that it seems the TC lockes up above 40mph now.

Problem is that he drives a lot in all day traffic as it´s his all day driver and he NEEDS to lock up the TC under that speed, or it´s useless for him. He never get´s that mph i town.

He has 3.07 gears, so can that be the problem.
Is the TC so loose because of the low gears??
How much better would that be with shorter gears (how much shorter?) and would the TC lock up earlier then??

And would the TC "hold" the lockup better with shorter gears , also?

He hates it to drive in town now as it sounds like he drives a car with a damaged (bad slipping)clutch.

Michael
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Old May 9, 2002 | 08:31 AM
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Default Re: Superyank 3500 doesn´t lock up need help. (Austrian Vette)

I am guessing it still has the stock programming. If Your C5 should do the same. It really should not feel that bad if he has the same STR as you do which on the C5 SY3500 is about a 1.6-1.7. If his is 2.0 or higher, it will feel looser at the lower speeds.

Hope this helps.

Mike
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Old May 9, 2002 | 10:12 AM
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Default Re: Superyank 3500 doesn´t lock up need help. (Vette Doc)

I am guessing it still has the stock programming. If Your C5 should do the same. It really should not feel that bad if he has the same STR as you do which on the C5 SY3500 is about a 1.6-1.7. If his is 2.0 or higher, it will feel looser at the lower speeds.

Hope this helps.

Mike
Mike, mine has a 2,5 STR and his has the 1,6 STR. and his is WAY looser!!!

Can it be the gears (he has 3.7 and I have 3.43) effecting that so much??

Michael
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