The IAC or Idle Air Control valve is responsible for maintaining the engines' proper and steady idle speed. When this goes bad, the idle speed will be erratic and can sometimes drop dangerously low on takeoff or when coming to a stop. Turner carries both Genuine BMW and high-quality aftermarket options.
Idle control valves are a common problem for the E60 M5 and E63/64 M6. This kit was built to correct several engine performance issues caused by a failed idle controller, including: stalling, rough or low idle, no idle compensation for accessory loads, and a possible check engine light or failed emissions test.
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