Steve

        It could also just be DirtyConnectors on the IdleControlUnit ~ So 1st UnPlug

the I'C'U' from its Socket & Spray some GoodQuality ContactCleaner in the Socket

& on the Blades of the I'C'U' & even use a WireBrush on the Blades if they look Bad ~

        I'm assuming you've already Sprayed some Cleaner into the IdleControlValve ~

                                                                ORR ~ DeanB

On 15 Jan , 2015, at 11:11 AM, Jim Felder wrote:

> I likely have one of these, if you give me a part number I can check.
> 
> Jim
> 
> On Thu, Jan 15, 2015 at 11:27 AM, Stuart MacMillan <stuartmacm@gmail.com>
> wrote:
> 
>> I had the same 2000 rpm problem, and it was a bad idle control unit in my
>> case.  Check that your idle control valve is humming, and then find an ICU
>> to borrow, they are expensive.  If it fixes it find a used one if you can
>> (I
>> found one for $75.)  If not, GW has rebuilt ones:
>> 
>> http://www.gowesty.com/ec_view_details.php?id=23468&category_id=&category_pa
>> rent_id=
>> 
>> Stuart
>> 
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
>> Van Pelt, Steve
>> Sent: Thursday, January 15, 2015 9:03 AM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: 2.1WBX running rich
>> 
>> Hi all,
>> 
>> My water boxer motor is running slightly rich, or at least I feel like it
>> is
>> since I don't have a smog meter. I have done all the usual checks such as
>> disconnecting temperature two sensor, disconnecting the oxygen sensor,
>> checking with a can of carb cleaner to see if idle changes when I spray
>> around the intake manifold hoses. New air cleaner installed.
>> The idle also is kind of an issue, in the sense that it will idle at about
>> 1000 and hunt between 1000 and 1200 RPM. That is with the idle screw on the
>> manifold screwed all the way in tight. If I backed the screw out, it runs
>> up
>> \ to 2000 rpm quickly.
>> 
>> Any other thoughts on what to look out for?
>> 
>> Thanks,
>> 
>> Steve
>>