[T3] Idle Air Bypass

[Max Welton]

Reason I ask is that when I did mine, it was sticking even after a very thorough disassembly, clean and lube. It wasn't returning to a closed position when warmed up. Mine seemed to be warped. I could tell by manually turning the shaft with the strip detached. I had to do some clearancing with a bit of abrasive and a drill to turn the shaft.
They are adjustable of course and you see this where the thermo-strip attaches. 
I also had to deal with leakage in the TB as well. All this stuff seals less well as they wear over time.
Max Welton http://www.maxwelton2k.net/      From: Max Welton <max_welton_2k at yahoo.com>
 To: "type3 at vwtype3.org" <type3 at vwtype3.org> 
 Sent: Sunday, November 8, 2015 9:22 AM
 Subject: Re: [T3] Idle Air Bypass
   
Daniel, are you able to achieve a normal idle speed?  
Max Welton http://www.maxwelton2k.net/
 

     From: Daniel K. Du Vall <dduvall at 1peter4-10.org>
 To: "type3 at vwtype3.org" <type3 at vwtype3.org> 
 Sent: Saturday, November 7, 2015 8:46 PM
 Subject: Re: [T3] Idle Air Bypass
   
Hmm I get some change and it still seems like allot of vacuum not just a little.

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Saturday, November 7, 2015 9:08 PM
To: type3 at vwtype3.org
Subject: Re: [T3] Idle Air Bypass

On 7 Nov 2015 at 17:23, Daniel K. Du Vall wrote:

> How do you adjust the Idle Air Bypass? Not sure if that is the right name.

> I bought one from Jim a while back and it seems to flow air even after 
> warmed up or hot for the matter.

I think you're asking about the Aux Air Regulator (AAR.)

It should already be properly adjusted. They never seal perfectly. 
The test is to close off the hose at the air cleaner with the engine running and fully warmedup. In that case, the idle speed should not change significantly when you close off the hose with your thumb.

Yes, you will still feel vacuum, but not enough air gets thru to affect the idle speed.
--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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