Mechanics

WHEN I START MY IT IDLED LOW WON'T STAY RUNNING.

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.
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Gkwhite83
February 13, 2012.



Check for vacuum leaks and check the idle air control valve.

What's the idle air control valve

Tiny
Gkwhite83
Feb 13, 2012.
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.

Thanks, I've been up pacing back and forth, wondering how could this happened without any codes or symbols.

Tiny
Gkwhite83
Feb 13, 2012.
What has shifted?

Dr. Hagerty
Mar 30, 2013.