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When I start my BMW 330ci it idled low won't stay running.

Tiny
GKWHITE83
  • MEMBER
  • 2004 BMW 330CI
  • 102,000 MILES
I drove my car 30 minutes before running across this problem and it was running perfectly fine wither no signs of problems. Whenever I crank it now it will start, but then idle low and cut off every time.
Monday, February 13th, 2012 AT 5:14 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Check for vacuum leaks and check the idle air control valve.
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Monday, February 13th, 2012 AT 5:16 AM
Tiny
GKWHITE83
  • MEMBER
  • 3 POSTS
What's the idle air control valve
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Monday, February 13th, 2012 AT 5:20 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
The iac is responsible for maintaining the engine's idle speed. On fuel injected engines, the throttle plate closes the entire way when you take your foot off the gas. The IAC allows metered air to enter the engine so it can run.
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Monday, February 13th, 2012 AT 5:31 AM
Tiny
GKWHITE83
  • MEMBER
  • 3 POSTS
Thanks, I've been up pacing back and forth, wondering how could this happened without any codes or symbols.
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Monday, February 13th, 2012 AT 5:43 AM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
What has shifted?
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Saturday, March 30th, 2013 AT 4:00 PM

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