C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

52mm throttle body help

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Old Apr 13, 2003 | 10:37 AM
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Default 52mm throttle body help

I just replaced my stock throttle body on my '87 due to bad bushings; it would never return to idle unless manually done. I replaced it with an aftermarket 52mm throttle body and now the problem is worse. I checked for binding cables and obstructions at the gas pedal without result. Any one have any ideas. Is there an idle adjustment I'm missing. Any help will be appreciated. :withstupid:
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Old Apr 13, 2003 | 04:09 PM
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Default Re: 52mm throttle body help (vette22)

Check the TPS voltage, and did you clean the IAC when you put on the new TB?
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Old Apr 13, 2003 | 04:28 PM
  #3  
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Default Re: 52mm throttle body help (vette22)

Yes, There is an idle adjustment procedure. I can't recall it right now.. it may be in tech tips
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Old Apr 13, 2003 | 07:24 PM
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Default Re: 52mm throttle body help (FoolCrzy)

After I put on my 52mm I readjusted everything. You can find a good write up with pics on TPS adjusting on 65Z01s site. Do a search on him and there you will find the link. He has a lot of other good info on there too.
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