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techtalk:evo:engctl03 [2020/01/24 21:55]
ixl2relax [TPS - Throttle Position Sensor]
techtalk:evo:engctl03 [2020/01/24 21:56] (current)
ixl2relax [IAC - Idle Air Control]
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 ==== IAC - Idle Air Control ==== ==== IAC - Idle Air Control ====
  
-The EFI Sportsters (2007-later) include an Idle Air Control (IAC) to set the idle speed of the engine. The IAC is mounted on the throttle body. See example in the 'EFI Manifold & Induction Module'​ picture.+The EFI Sportsters (2007-later) include an Idle Air Control (IAC) (see pic above) to set the idle speed of the engine. The IAC is mounted on the throttle body.
  
 In normal operation, the opening and closing of the throttle plate in the throttle body (via the throttle cables) determines the amount of air flow into the intake manifold. But in the EFI system, the ECM controls the IAC which opens & closes an air pathway around the throttle plate to supply air into the manifold during engine idling. In normal operation, the opening and closing of the throttle plate in the throttle body (via the throttle cables) determines the amount of air flow into the intake manifold. But in the EFI system, the ECM controls the IAC which opens & closes an air pathway around the throttle plate to supply air into the manifold during engine idling.