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Erratic idle

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Old Sep 6, 2010 | 02:55 PM
  #1  
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Default Erratic idle

My idle jumps around when I'm in neutral and coasting to a stop. It will jump from 600 to 1200 rpm and settle when I come to a complete stop. It is worse when the AC is on. I changed the air filter, cleaned the MAF and IAC but nothing has changed. Any idea's?
Thanks
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Old Sep 12, 2010 | 11:23 AM
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Can anyone point me in the right direction? This problem is really annoying.
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Old Sep 12, 2010 | 11:47 AM
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you can try reseting the iac just unplug it then turn the key on but dont start it and leave it like that for a few min.
then turn the key off plug in the sensor and crank it up
and this also works for the maf.
you can also reset the pcm and make it relearn its idle by disconnecting the battery for 10-15 min then hooking it back up.

if not then i might just need a new iac valve some times cleaning then dont cut it.

is there any codes on?
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Old Sep 12, 2010 | 11:47 AM
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throwing any codes?
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Old Sep 12, 2010 | 11:47 AM
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Still sounds as if theres a restriction in your IAC.. Remove the TB and thoroughly clean the SOB.

Mario
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Old Sep 12, 2010 | 12:03 PM
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Originally Posted by shaun
you can try reseting the iac just unplug it then turn the key on but dont start it and leave it like that for a few min.
then turn the key off plug in the sensor and crank it up
and this also works for the maf.
you can also reset the pcm and make it relearn its idle by disconnecting the battery for 10-15 min then hooking it back up.

if not then i might just need a new iac valve some times cleaning then dont cut it.

is there any codes on?
I am not throwing any codes. I have disconnected the battery, no change. I have not tried unplugging the iac yet. I'll give it a try and post the results.
Thanks
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Old Sep 12, 2010 | 12:25 PM
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also check for a vacuum leaks
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Old Sep 12, 2010 | 12:52 PM
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Default Iac ???

Hello,
I am also having some idling problems, please excuse my ignorance, but what is the IAC?
Thank you
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Old Sep 12, 2010 | 02:41 PM
  #9  
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Idle Air Control.
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Old Sep 12, 2010 | 02:43 PM
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IAC mean idle air control; it's locate on the opposite side of the throtle cable on the throtle body on the top ( left side)
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Old Sep 13, 2010 | 08:44 AM
  #11  
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Vacuumleaks +1,

wiggle all the little hoses when idle; see if rmps rises or stalls ,if this happens and not sure which one of the billion little hoses it is:

I have heared of someone using a highly flamable non residual aerosol,dont know what u have in the US and start spraying carefully on the hoses bit by bit piece by piece without moving them ,if rmps rises; bingo you have found the spot.

Carefull with this of course, not to set the **** on fire ,that would be the worst solution
Keep an exthinguisher on hand,non foam one,no water!!!
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Old Sep 13, 2010 | 10:46 AM
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clean your maf with the correct maf spray cleaner,trust me!!!
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Old Sep 13, 2010 | 06:02 PM
  #13  
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I used the MAF cleaner from Autozone.
I disconnected the IAC and turned the key to run as SHAUN instructed and it seemed to do the trick. So far the idle has calmed down and is staying pretty steady.
Thanks guy's!!
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