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Old 12-23-2016, 01:33 AM   #21
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Thanks! That looks like it covers everything. Cheaper than diagnosis at the dealership. Thanks again!
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Old 12-23-2016, 02:55 AM   #22
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Would I be able to reflash pcm as well? Does this work with ford website to update?
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Old 12-23-2016, 03:44 PM   #23
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Looks like an interesting option over using a normal OBD code reader/scan tool, IF you've got the spare Win 7 laptop to use with it. The other less satisfactory method is an ELM clone used with a smart phone.

NO you can't use something like that for Ford direct linkup, that's a paid service NOT avail. to just anyone for free. The better/more expensive IDS tool setups often include a short term license to that service according to their advertising.
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Old 12-23-2016, 03:56 PM   #24
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Correct, flashing PCM is a web service now and you need a subscription for that. Although it will have some of the older calibration files that probably don't apply to your model year. In any case I don't recommend flashing with this knock off device as PCMs are expensive to replace.
It will only work on Windows XP and for that you will create a virtual machine. It should come with all the instructions, poorly translated at times. If you do end up getting it and need tech help, let me know.

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Old 01-19-2017, 05:13 PM   #25
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Thanks again for all the help. After going through this whole process, only thing I can find is the parameters for the throttle body are off, and will not stay constant. I will be replacing the throttle body later next week, and then full reset to see how she will react. Fingers crossed!
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Old 10-11-2019, 11:59 AM   #26
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As I have a 2010Focus with the same roaming idle when the AC is on, has anyone found the root cause?
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Old 10-11-2019, 12:09 PM   #27
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If it happens when your AC is on and you're low on refrigerant, and it's constantly cycling the clutch on and off on the compressor it can cause some idling issues.
I actually had a idling issue on my car recharged my AC system that was low haven't had a problem since.
Not saying you are low on refrigerant but a constantly cycling on and off compressor clutch can make a unpleasant idle situation.

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Old 10-11-2019, 12:29 PM   #28
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The refrigerant pressures are correct / in range. The idle fluctuation is not in rhythm with the engagement / disengagement of the AC clutch. That is if the AC is constantly engaged, the idle is fluctuating from 500 to 1000 RPM.
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Old 10-11-2019, 12:34 PM   #29
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All maintenance is up to date. I have also replaced the TB and MAF with no help. I have removed the battery for a couple hours to try a reset. I am not sure how to check the TPS?
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Old 10-12-2019, 02:35 AM   #30
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A vacuum leak will make the TB chase it all around as it tries to correct for it similar to what the older IACs do. Just got finished with a Nissan with the same problem, found the leak and problem quit. In that case the TB was locked against the off stop as it was trying to go lower than the stop would let it go in an attempt to lower the idle speed.
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