[W126 Coupe] Re:HI IDLE

[Sharan Bains]

The idle speed is all controlled electronically - the mixture screw will not 
impact the idle speed.

Have you checked the bypass valve on the idle air valve - small plastic pipe 
connecting the two main hoses ?

If that's leaky or come loose, idle will jump.

talbir



>From: "Dan Gardner" <cruftsk9@tpg.com.au>
>Reply-To: mbcoupes@mbcoupes.com
>To: <mbcoupes@mbcoupes.com>
>Subject: [W126 Coupe] Re:HI IDLE
>Date: Fri, 7 Jan 2005 20:24:10 +0800
>
>As this is my first post for the year"Happy New Year To Everyone"
>
>Since I have got my car running again I have noticed the idle speed has 
>increase from 750rpm to 1200rpm,I have cleaned the idle air valve with carb 
>cleaner and removed a lot of black carbon,having viewed the archives It 
>would appear to have developed a vacuum leak or the  idle air valve has 
>changed since cleaning.
>
>    I might use hose clamps on the push-on hoses just to make sure,the 
>question is is it OK to adjust the idle screw or does that only change 
>mixture,the cd-rom does'nt really specify.
>
>
>                                                                            
>  Kind Regards  Dan Gardner    1986 560 SEC euro 220kw(300HP)
>
>
>
>
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