Hi Ken and Dennis,

        Always learning something here.

So, I guess I was confusing two parts and thought they were the same thing. 

The Idle Air Valve I still have is the part I am hoping to learn about. 
The Idle Control unit apparently is gone on my van.  I hope to see what that is on a future van exploration. 

So, anyone out there tell me what my Idle air Valve does? 

And, if anyone is up to it maybe a understanding of the Idle control Unit on the 2.1 

I also have something I think is called an Idle Control uit on my 1.9 but it is currently not hooked up. 

I’m interested in knowing what that does as I have a couple of good ones now at hand and could install. 

Eric Caron 
> On Nov 14, 2023, at 6:34 AM, kenneth wilford (Van-Again) <kenwilfy@COMCAST.NET> wrote:
> 
> That what I thought.
> 
> Ken
> 
> On Tue, Nov 14, 2023, 6:23 AM Dennis Haynes <d23haynes57@hotmail.com> wrote:
> 
>> The GoWesty EFI uses the idle air control valve from the 2.1L. However the
>> new ECU itself controls it, the separate idle control unit add on for
>> Digifant is not there.
>> 
>> Dennis
>> 
>> 
>> -----Original Message-----
>> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of
>> kenneth wilford (Van-Again)
>> Sent: Monday, November 13, 2023 6:31 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Cold weather issue - super high idle
>> 
>> Eric, are you sure the GoWesty EFI uses the same idle control unit as a
>> Digitant FI Vanagon?  I thought they replaced everything.
>> 
>> Ken
>> 
>> On Mon, Nov 13, 2023, 3:35 PM Eric Caron <ericcaron96@comcast.net> wrote:
>> 
>>> Hi folks,
>>> 
>>> Correction, I said the idle was at 41 and should have been 35.  I
>>> meant to say the timing.
>>> 
>>> Eric Caron
>>> 
>>> 
>>>> On Nov 13, 2023, at 3:13 PM, Eric Caron <ericcaron96@COMCAST.NET>
>> wrote:
>>>> 
>>>> Hi Ken,
>>>> 
>>>>       Can you tell me a bit more about what the idle control unit
>>>> does
>>> in the 2.1?
>>>> 
>>>>       I have a 2.3 with GW Fuel injection, idle has always been
>>>> less
>>> than great both on this 2.3 and the recent one installed.
>>>> 
>>>>       I’m having some work done to dial it in.  One thing we found
>>>> was
>>> that the idle was at 41 and should have been 35.
>>>> 
>>>>       Now van is more likely to stall from a start especially in
>>> reverse. Is it possible my ICU is not healthy?
>>>> 
>>>>       I was actually just handed two of them by friends and could
>>>> swap
>>> them in to try but wonder if this is really a symptom of a bad one.
>>>> 
>>>> Any way to test the ICU so I know if I have a good spare or should
>>>> send
>>> them in as cores for folks to rebuild for future users.
>>>> 
>>>> Thank you for the great recent posts on list and YouTube.
>>>> 
>>>> Eric Caron
>>>> 
>>>> 
>>>>> On Nov 13, 2023, at 8:33 AM, kenneth wilford (Van-Again) <
>>> kenwilfy@COMCAST.NET> wrote:
>>>>> 
>>>>> Check, throttle position switch adjustment.  Test switch electrical
>>>>> operation.  If the switch is good, then most likely the idle
>>>>> control
>>> unit
>>>>> needs to be repaired.  We can do that for you for $225.  I have a
>>>>> nice video on YouTube about the throttle position switch.  Search
>>>>> for that
>>> and
>>>>> you will see it.
>>>>> 
>>>>> On Mon, Nov 13, 2023, 8:16 AM Markus Benne <mbenne@m-bass.com> wrote:
>>>>> 
>>>>>> Oops.  Forgot that vital piece of info.
>>>>>> 
>>>>>> 1990, stock 2.1
>>>>>> 
>>>>>> Sent from Yahoo Mail on Android
>>>>>> <
>>> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.
>>> onelink.me%2F107872968%3Fpid%3Dnativeplacement%26c%3DGlobal_Acquisitio
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>>> 1CmdSWY%3D&reserved=0
>>>> 
>>>>>> 
>>>>>> On Mon, Nov 13, 2023 at 8:05 a.m., kenneth wilford (Van-Again)
>>>>>> <kenwilfy@comcast.net> wrote:
>>>>>> What year and engine?
>>>>>> 
>>>>>> Ken
>>>>>> 
>>>>>> On Mon, Nov 13, 2023, 7:50 AM Markus Benne <mbenne@m-bass.com>
>> wrote:
>>>>>> 
>>>>>> I've got a cold weather issue going on.
>>>>>> When I start the car and it's cold (around freezing) the idle hits
>>> 2500rpm.
>>>>>> Once the engine is warm, it drops to a normal idle.
>>>>>> I haven't investigated much yet, and the car should be off the
>>>>>> road for the season in a next couple of weeks, so not a high
>>>>>> priority issue, but vexing nonetheless 😀
>>>>>> 
>>>>>> 
>>> 
>>