S10/T10 P/U 4WD L4-151 2.5L (1985)
Removing Plug
NOTE: Throttle Stop Screw plug may need to be removed.
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Connect a tachometer to engine.
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Disconnect Idle Air Control (IAC) valve electrical connector.
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Start engine, place transmission in Park (Neutral for manual transmissions), and allow engine rpm to stabilize.
Installing J-33047
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Install tool J-33047 in idle air passage of throttle body. Be certain that tool seats fully in passage and no air leaks exist.
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Using appropriate tool (number 20 Torx (R) Bit), turn throttle stop screw until engine rpm is:
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Automatic Transmission, 475-525 rpm.
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Manual Transmission, 750-800 rpm.
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Stop engine and remove tool J-33047 from throttle body.
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Install TV cable into throttle control bracket.
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Install IAC connector.
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Use silicone sealant or equivalent to cover throttle stop screw.
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Install air cleaner gasket and air cleaner assembly.
Without Special Tool J-33047
