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Message: <blockquote data-quote="toyman" data-source="post: 1310420" data-attributes="member: 10841"><p>You are confusing the parts. The part you are calling the IAC is the TPS. The TPS on the sn's do not need to be adjusted as the ECU will recognize the idle position with the volts between .6v - 1.25v. The IAC valve (not a sensor) is an open or closed solenoid that pulses to maintain idle quality when the throttle in the closed position. Because you keep mixing up the parts it's not clear to me that you did in fact replace the IAC valve. The IAT sensor is located in the air intake tube and measures the air temperature which the ECU uses to calculate the air density.</p></blockquote><p></p>