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Where is the idle speed adjustment screw on a 1990 Nissan 240 SX?
Wiki User
∙ 11y ago
its on the iacv (intake air control valve). it sits on the back of the intake manifold. look for a really big flat head screw
The idle adjust screw on a 90 240sx is on the throttle body. unplug your throttle position sensor before making adjustments. (corrected myself)
Wiki User
∙ 11y ago
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