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Old 01-12-2014, 07:15 PM   #1
tangystang
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Default high idle

I started my car today and it idled really high. I figured it would go down but it didn't. I drove the car for a while and still idled high. And it also does this, when I'm in any gear and I get up to about 3-3500 rpms and let off the gas to slow down without breaking once the rpms drops just a bit then it drops again really far and changes the tone of the car. It runs fine except for the idle.
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Old 01-14-2014, 11:25 AM   #2
Fryguy22
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sounds like your IAC needs either cleaned or replaced.
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Old 01-15-2014, 12:49 AM   #3
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Most definitely your IAC or your Throttle Sensor might be going bad. Chances are it's probably going to be your IAC.
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Old 06-02-2014, 09:41 PM   #4
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Quote:
Originally Posted by BMWiduch View Post
Most definitely your IAC or your Throttle Sensor might be going bad. Chances are it's probably going to be your IAC.
What is a IAC & where is it located?
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Old 06-02-2014, 10:18 PM   #5
VTX1800N1
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Quote:
Originally Posted by HocusFocus763 View Post

What is a IAC & where is it located?
Inlet Air Control. It lets the computer bypass the throttle plate for intake air to control idle speed. It's on the throttle body.

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Last edited by VTX1800N1; 06-03-2014 at 09:46 PM.
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Old 06-03-2014, 09:34 PM   #6
robb15033
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I did a quick search. I did NOT watch it but it is removed and cleaned, put back on.
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Old 06-05-2014, 07:32 PM   #7
HocusFocus763
 
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Replaced the IAC & that did the trick Thanks everyone.

Also found a way to test for this. Place a piece of tape over the two holes under the IAC, reinstall the IAC, start the engine. Mine would run, very low idle, & had to hit the gas to keep it running. It was not at all running at high idle, so I replaced the IAC w/ a new one, problem solved .
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Old 06-05-2014, 07:32 PM
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