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rebuilding throttle body seals

1289 Views 5 Replies 2 Participants Last post by  88a5tq, 
88a5tq
Hey so has anyone here rebuilt the seals on the throttle body butterfly shaft on their 5000 turbo? Maybe I saw someone mention it. Anyway I'm just trying to get an idea of where to buy the seals or if I can use orings or something? I have water/Meth solution on my IM I think and the spring on the shaft looks pretty wet. Thanks in advance.
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88a5tq
I partially took apart the cable-side on my parts car and noticed the bearing is metal with what are likely rubber internal seals. It might be pressed into the TV? Anyway next to those are washers that might work well pressing some orings against the bearing to minimize leakage. Somebody on a supra forum did the same..
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88a5tq
I threw one viton oring on and replaced the loose vacuum hose at the very bottom of the TB and the leak is gone. I guess it was one or both of those areas causing issues.
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a-talk
Could you give us a photo of which o-ring? I was sure I'd seen a write-up on TB rebuild/reseal, but was unable to find it.

88a5tq said:
I threw one voting oring on and replaced the loose vacuum hose at the very bottom of the TB and the leak is gone. I guess it was one or both of those areas causing issues.
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88a5tq
the oring isn't a factory part. I bet it isn't really doing anything where it is now lol. I took everything off the drivers side of the shaft and put a snug oring against the press-in factory bearing and slid the 2 side-by--side flat washers back on and put everything back on in order. I think in my case the problem was just the vacuum line.
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88a5tq
As requested. That is a metal press-in bearing you're looking at in the pictures. It's what's left when everything is stripped from both sides of the butterfly shaft. That is what I put the oring up against. I had a box of harbor freight viton seals so used the thinner of the 2 in that size. The throttle body pictures is off the parts car and donated a few parts.

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