RE: [ST] idle again

["Masiak, Richard" <Richard_Masiak@xxxxxxxxxxxxxxxx>]

Well?  Maybe, maybe not.

I have exactly the same problem on my 2000 RS.  I had a "surging" on the low end that began about a year ago, but not too disturbing.  It recently got worse (with the stock can) and when I switched over to the Two Brothers can it was real bad.

I was told, so thought the same thing, about an air leak.  Only problem is, the air box connects directly to the throttle body.  Short of the idle air stepper unit, there really isn't much that can leak.

***I got at the stepper unit and checked its hoses for leaks.  No leaks.  However, I did notice that the little white plunger was pretty gunked up with black soot.  The clearance is very tight, so I removed the cover and cleaned the white plunger, and the body it slides in, with alcohol.  Quite easy, actually.***

Stepper plunger movement is now much better and it can better compensate for the pulsing much better.  I now notice that the surging or pulsing at idle is much less, although it still has it's moments.  My next, and hopefully final, step is to remap the ECU with a new tune.

YES.  I broke down and ordered a TuneBoy today.  I decided that it's much more that just remapping.  It's got a nice looking GUI for diagnostics and can read the ECU error codes.  It also has live data logging, so I can throw a laptop in a backpack and log live engine data while driving.  I figure, since I'm going to probably have this bike for a while, the TuneBoy will help me troubleshoot any future problems. I'll either fix them myself or bring to a dealer with my data (which should shorten their job time?)

Hope this helps.

Rich

- -----Original Message-----
From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx]On Behalf Of
Andrew F. Kay, Jr. 
Sent: Monday, April 04, 2005 12:24 PM
To: ST@xxxxxxxxxxxxxx
Subject: RE: [ST] idle again


You have an air leak somewhere downstream of the throttle bodies.

Andrew F. Kay, Jr.
Riders of the Lost Empire, LC,  13355 79th Street, Fellsmere, FL 32948
www.lostempire.com   andy@xxxxxxxxxxxxxx 
"Sound, sound the clarion, fill the fife, throughout the sensual world
proclaim, one crowded hour of glorious life is worth an age without a
name." Thomas Osbert Mordaunt, 1730-1809



- -----Original Message-----
From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx] On Behalf Of t
Sent: Monday, April 04, 2005 12:12 PM
To: ST@xxxxxxxxxxxxxx
Subject: [ST] idle again


I know this was gone over not to long ago,  but I've lost my saved 
e-mails to refer to.  My 00 RS started idling up and down from 900rpm's 
to 1800rpm's.  With the clutch in, it idles at around 900- 1200rpm's.  
1300 has always been the norm for this bike.   If I put it in neutral it

jumps way up aroud 1500-1800 erratically.  Yesterday it almost died 
while going down the road, breif hesitation and then continued as 
normal.  Any ideas anyone could rehash for me on an inconsistent idle 
would be appreciated.

Thanks in advance,

TimE

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