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throttle body won't open all the way

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Old Apr 14, 2013 | 07:22 PM
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Default throttle body won't open all the way

I got an ls6 intake and a ported and polished 85 mm tb, after install the blade won't touch the bump stop. There's about a 1/2 in space between the blade and the bump stop. And the throttle cables has been adjusted (tsc car ) . Any Idea how to fix? I need to get it fixed by Friday for the races.
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Old Apr 14, 2013 | 09:20 PM
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Will it go WOT by hand without the cable attached? If it will and it is a cable placement issue. All you can do is adjust the cables or notch the bolt hole in the bracket and slide the bracket back.
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Old Apr 14, 2013 | 09:29 PM
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Originally Posted by VandykeT/A
Will it go WOT by hand without the cable attached? If it will and it is a cable placement issue. All you can do is adjust the cables or notch the bolt hole in the bracket and slide the bracket back.
Yeah I can open it all the way, we adjusted the cable and there's still slack. And you're talked about the brack on tip of the intake?
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Old Apr 14, 2013 | 10:58 PM
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My Bad , only one position.

Did you adjust both cables ?
One goes into the tcu, One comes out.

Last edited by 99Bluz28; Apr 14, 2013 at 11:15 PM.
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Old Apr 14, 2013 | 11:23 PM
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You may have to bend the arm on the gas pedal to
get enough cable draw. I did, and on another local
dude's car he couldn't get past 85% TPS until we
did it to his. With everything adjustable, adjusted.
You could do the same with spacers too, but it's
two bolts, two minutes and a piece of pipe in the
bench vise.

Now I also ran into the TCS "gizmo" limiting the draw
when I swapped up to a 85mm TB, and at that point
the throttle & cruise cables I swapped to non-TCS to
bypass that mess.
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Old Apr 15, 2013 | 07:42 AM
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Originally Posted by jimmyblue
You may have to bend the arm on the gas pedal to
get enough cable draw. I did, and on another local
dude's car he couldn't get past 85% TPS until we
did it to his. With everything adjustable, adjusted.
You could do the same with spacers too, but it's
two bolts, two minutes and a piece of pipe in the
bench vise.

Now I also ran into the TCS "gizmo" limiting the draw
when I swapped up to a 85mm TB, and at that point
the throttle & cruise cables I swapped to non-TCS to
bypass that mess.
Did you just change the throttle and cruise control cables, or did you delete the tsc all to gather ?
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Old Apr 15, 2013 | 12:40 PM
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maybe im off here but that blue spring and bump stop looks like a stock tb which is 75mm are you sure its not a factory one
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Old Apr 15, 2013 | 12:42 PM
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From: georgia
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Originally Posted by redbird555
maybe im off here but that blue spring and bump stop looks like a stock tb which is 75mm are you sure its not a factory one
You are correct. The guy I bought them from miss informed me. But it's been machine ported and polished? What ever that means.
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Old Apr 15, 2013 | 12:45 PM
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ya thats normal and a good hp gain for the money you can actually file down the bump stop to get the blade to open full as its only open about 90% whenit hits the factory bumpstop. anyway with that said you should have no issue with adjusting that tention. have you adjusted both cables leading to and from the tcs box
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Old Apr 15, 2013 | 12:47 PM
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From: georgia
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We adjusted one if them the day we changed the intake and tb out, but I'll try adjusting the other one. And I might just bend the gas pedal to compensate for th slack
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