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Ever since I did the A4 to M6 swap I notice I have a hard time finding where the bottom of the pedal is. Should be easy enough but when I floor it, with all the noise, adrenaline and everything else going on its not. So pedal to the metal is more like pedal to the middle? Theres seems to be to much extra travel of the gas pedal even though the throttle itself is maxed. From what I remember with my A4 and old pedal assembly, the bottom was the bottom. You hit the floor and thats all she's got. This one on the other hand I gas it, then it feels firmer and I can go further. In turn I've gotten the throttle stuck twice at WOT luckily both times I was in a good empty road where I could just shut the car down and stop.
When the cars off and I'm sitting in my garage playing with the throttle trying to figure this thing out its easy to feel the stop on the throttle body, you can hear it. If i press further it almost seems like the TCS or cruise control module keeps giving, thus giving me the impression I have more left. Maybe thats whats actually getting stuck and not the throttle itself. Not sure if theres an adjustment? I've looked everywhere, nothing on this particular problem. I don't want to delete the TSC or cruise control either, I'd like to keep them.
You need to have someone watch the stroke of the cable/throttle body etc while you push the pedal.
Sounds like either the TCS is activating or something is moving.. for example if you push the pedal till it stops is it for sure hitting the stop on the throttle body cam? And when you push harder is there a bracket flexing or the stop on the cam on the throttle body flexing?
Did you change the throttle body at the same time? If so it may have a different cam on it changing the sweep of the pedal.
You said it doesn't get stuck when the engine is off, that makes me think the TCS using is engaging or acting up or something funky with the throttle body blade..
You need to have someone watch the stroke of the cable/throttle body etc while you push the pedal.
Sounds like either the TCS is activating or something is moving.. for example if you push the pedal till it stops is it for sure hitting the stop on the throttle body cam? And when you push harder is there a bracket flexing or the stop on the cam on the throttle body flexing?
Did you change the throttle body at the same time? If so it may have a different cam on it changing the sweep of the pedal.
You said it doesn't get stuck when the engine is off, that makes me think the TCS using is engaging or acting up or something funky with the throttle body blade..
I think you're right about the TSC, but when I press the pedal down it for sure the throttle body cam bottoming out. The bracket thats mounted on the intake does have a tiny bit of flex if i force it but almost none. The TSC cam however definitely keeps going. I did change the throttle body at the same time. I ordered it from WS6store. And now that you mention it, it has a reducer or "transition plate"
As you can see in the video the TB hard stops where its suppose to. No binding. Once you hear the click from the stop look to the left and watch the TSC keep traveling as I put more pressure on the pedal
So what you're feeling is the throttle body bottom out then you're forcing the pedal past the stop. You have a spacer which effectively shortens the cable which shortens the pedal throw
You need to put the throttle cable bracket as far forward as your spacer is thick to keep everything as it was. So if the spacer is for example .5" thick you need to move the cable bracket forward .5"
You shortened your cable which shortened the pedal throw. Need to also find out why it's binding wide open. The throttle blade may be hitting the spacer or something like that
Over all I gotta say I don't like that throttle body or spacer and I would put a ported stock throttle body on it if it were mine. Or put the stock one back on. Aftermarket throttle body isn't gonna give you any extra power from size, only from having a smooth inlet which you can do to a stock throttle body and not have any of these issues. Or take the spacer off if you can and use that throttle body you have.
So what you're feeling is the throttle body bottom out then you're forcing the pedal past the stop. You have a spacer which effectively shortens the cable which shortens the pedal throw
You need to put the throttle cable bracket as far forward as your spacer is thick to keep everything as it was. So if the spacer is for example .5" thick you need to move the cable bracket forward .5"
You shortened your cable which shortened the pedal throw. Need to also find out why it's binding wide open. The throttle blade may be hitting the spacer or something like that
Over all I gotta say I don't like that throttle body or spacer and I would put a ported stock throttle body on it if it were mine. Or put the stock one back on. Aftermarket throttle body isn't gonna give you any extra power from size, only from having a smooth inlet which you can do to a stock throttle body and not have any of these issues. Or take the spacer off if you can and use that throttle body you have.
Thats true, the spacer did shorten it and when I first installed this throttle body it was stuck slightly open because of that. But wouldn't have adjusting it like I did have remedied that? It idles perfectly. I feel like the pedal is able to travel a whole lot more then .5 inches. Like a lot more. Im almost wondering if its the pedal itself. Thats really the only other thing that has changed when it comes to throttle (Besides the throttle body) I had a ported TB before this one, I had nothing but problems with it. It was over ported according to my tuner so we tossed it.
Ill definitely mess around with the cable length though.
I'm not sure what you did to adjust it. Maybe try taking the throttle cable bracket off and mounting it forward by placing the rear bolt hole in the front bolt hole location and bolt it down and see what happens.
For whatever reason the pedal is stroking further than the throttle body allows so something is out of whack.
That sucks about the ported throttle body. Mine never gave me any issues I wonder if they just did a bad job porting it.
Is it possible to use your throttle body you have now without a spacer?
Is the TB spacer ID slightly smaller than the butterfly OD? It’s possible the spacer and butterfly are binding at WOT and then are essentially press fit together. Check the spacer for witness marks at the 3 and 9 o’clock positions.
Is the TB spacer ID slightly smaller than the butterfly OD? It’s possible the spacer and butterfly are binding at WOT and then are essentially press fit together. Check the spacer for witness marks at the 3 and 9 o’clock positions.
Pooter alluded to this scenario as well, and I’d venture to guess you both are right. This is where I’d start.
00pooterSS For whatever reason the pedal is stroking further than the throttle body allows so something is out of whack. I wonder if they just did a bad job porting it. Is it possible to use your throttle body you have now without a spacer?.
Thats what its looking like, that video is the first time Ive seen it all in action and pretty much confirms it. Looks like the TSC is whats moving to much- figuring out WHY is my current problem though. My old throttle body is long gone, I should of kept it.
Originally Posted by s30.hybrid
Is the TB spacer ID slightly smaller than the butterfly OD? It’s possible the spacer and butterfly are binding at WOT and then are essentially press fit together. Check the spacer for witness marks at the 3 and 9 o’clock positions.
Yeah that spacer basically reduces the 80mm TB to a 78mm so its definitely smaller. No binding in it as far as i could see. Ill get my snake cam in there and see what it looks like to verify.
I need a picture of some pedals to cross reference. A picture of the gas pedal at WOT (car off of course) would be nice to see the difference in mine. If any. These things use to be so much easier to diagnose and compare when everyone had an f-body
First off you have to move the cable forward (the cable bracket) you moved the throttle body forward you HAVE TO move the cable forward.
Don't diagnose anything until you fix the problem you actually caused by doing that. You can't have a properly functioning system with and improper setup. Start by making it right then go from there.
So I came up with a fairly easy "fix" I put a bolt and nut through the top of the TSC gear and now it stops exactly where its supposed to. Its been really nice to know where WOT is. Technically this fixes my problem but it doesn't fix the actual cause. But it'll do for now I guess.
I was scrolling through some pedal assembly pictures and I noticed something mine doesn't have. And I cant remember if my automatic setup had this. Anyone have a picture or can take a picture of their gas pedal? If someone could take one that would be greatly appreciated
Instead of putting a rig on it for a problem why not fix the obvious issue and move the cable bracket closer to the throttle body.
You need to correct that issue first.
Can buy a bracket like in this post, $15 https://ls1tech.com/forums/nitrous-o...e-install.html
I had no idea. I was already making my own! Cool, thanks for the link.
Yeah they make them for nitrous plate kits since the plate kit is essentially a throttle body spacer.
Either way I would start with the linkage relocation and look at every thing again from there and take that bolt out of the TCS unit. That introduces other variables that could cause other issues. Don't fix rig ups with more rig ups in other words.
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WS6 gets stuck at WOT 
Theres seems to be to much extra travel of the gas pedal even though the throttle itself is maxed. From what I remember with my A4 and old pedal assembly, the bottom was the bottom. You hit the floor and thats all she's got. This one on the other hand I gas it, then it feels firmer and I can go further. In turn I've gotten the throttle stuck twice at WOT 
luckily both times I was in a good empty road where I could just shut the car down and stop. 
