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Old 04-28-2012, 05:39 PM   #1
mwheeler1982
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Mad 2006 Ion-2 High Idle After TB Cleaning

My 2006 ion with 78,000 miles was idling very rough. I replaced the fuel filter, inspected the air filter, and cleaned the throttle body. After starting the car back up, I got the "high idle" issue. It idles right at 1500 RPM.

I've read every thread out there about the high idle after TB cleaning issue. I can't seem to get my idle to settle down. I did not remove the TB to clean it, just sprayed the cleaner down in it and wiped it out.

Here's what I've done to try to fix the idle issue:
* checked for vacuum leaks
* left neg. battery cable off over night
* cleaned the MAF sensor with the appropriate cleaner.
* did the "turn key, no start, tb butterfly reset" procedure multiple times
* did the "drive above 44mph, then let off the accelerator" pcm re-program procedure. I've done this at least 40-50 times over the last week.
* took the car to the dealership to have the pcm re-flashed. the service sheet also says that they "re-set the IAC"

After all this, I still cannot get the idle to settle down. Does anyone else have any ideas as to what I can do to fix this? I never knew cleaning

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Old 04-28-2012, 10:36 PM   #2
Samtherecordman
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2007 ION-3 Quad Coupe
Default Re: 2006 Ion-2 High Idle After TB Cleaning

Does it always idle at 1500 RPM ALL THE TIME or does it do it once it First Starts or it it just Random ???

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Old 04-30-2012, 08:41 AM   #3
mwheeler1982
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Default Re: 2006 Ion-2 High Idle After TB Cleaning

Well, I'm not sure about it now. After I had the PCM re-flashed, I just drove the car home and parked it in the garage.

I drove it a bit around town yesterday and then to work today. At first start and after the car is warm, the idle is now 1250 RPM. If I let the clutch out a bit to get the RPMs below 1000, it'll start idling at around 900RPM (normal) until I turn off the car. Next time I turn on the car, it'll start idling at 1250 RPM again.

This was never a problem until I cleaned the TB, so I'm guessing it has something to do with that. Surely it's not possible that cleaning the TB has somehow ruined the PCM??

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Old 04-30-2012, 09:28 PM   #4
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Default Re: 2006 Ion-2 High Idle After TB Cleaning

no, it isn't.

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