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Need help with throttle cable adjustment (I did a search and still str


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My reader shows the TPS to be at 53% when the pedal is to the floor. I also visually confirmed that the throttle body is not opening up all the way either. I've searched on this forum and found a post that refers to disconnecting the cable at the throttle body, pushing it cable out of the bracket and twisting the black part until you are able to reach WOT. What I'm struggling with is does the nut need to be held when doing this? I'm really having a hard time getting this figured out (last piece to completing my project).

Thanks

:renntech:

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My reader shows the TPS to be at 53% when the pedal is to the floor. I also visually confirmed that the throttle body is not opening up all the way either. I've searched on this forum and found a post that refers to disconnecting the cable at the throttle body, pushing it cable out of the bracket and twisting the black part until you are able to reach WOT. What I'm struggling with is does the nut need to be held when doing this? I'm really having a hard time getting this figured out (last piece to completing my project).

Thanks

:renntech:

Anybody? I'm really at a loss here. I would have thought this would be pretty straight forward but nothing seems to help. As things stand right now the throttle body is completely closed when the throttle isn't depressed and is not reaching WOT when it's depressed. I can see how I can adjust the cable to work properly...Please help!

post-26131-1212716340_thumb.jpg

From what I've been able to gather on this site thus far, the black piece should be twisted to adjust the cable, but that doesn't seem to do anything...I've tried the other end at the throttle and the junction in the middle.. no luck.

post-26131-1212716492_thumb.jpg

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Do not remove the black cable from the connection to the throttlebody. Remove the wire (which has a crimped lug on it) from the valve bracket. This is the part I suggested twisting to shorten it. However, I wonder if you have other problems if it is only opening 53%. Make sure something is not blocking your pedal.

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The pedal is clear.. I think that I understand what your saying...basically wrap the cable around the barrel lug to shorten the cable length. I guess I'd question why there is no "real" adjustment on the cable... I was looking at some pictures of the old engine and I can see that the throttle valve is opened partially at Idle..Is this correct? Is there a % on the TPS that the valve should be at when in the idle state?

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The pedal is clear.. I think that I understand what your saying...basically wrap the cable around the barrel lug to shorten the cable length. I guess I'd question why there is no "real" adjustment on the cable... I was looking at some pictures of the old engine and I can see that the throttle valve is opened partially at Idle..Is this correct? Is there a % on the TPS that the valve should be at when in the idle state?

No, do not rap the wire around the barrel lug. Simply "twist" the wire like a braided rope. As if you are screwing it into the black cable. Twisting it will slightly shorten the cable with each full turn. You need to make sure you hold the wire while reinserted the lug in the bracket so it does not untwist.

Edited by 1999Porsche911
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After I thought about wrapping the cable around the barrel, I figured that's not a good idea. I'll try twisting it like you suggest. One question that I'd still like to know is if the throttle body should be completely closed at closed throttle, or partially open.

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