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Date:         Tue, 18 May 1999 13:38:58 PDT
Reply-To:     Mark McCulley <transporter99@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark McCulley <transporter99@HOTMAIL.COM>
Subject:      Re: Throttle adjustments help wanted
Comments: To: johan.nyberg@ABC.SE
Content-type: text/plain; format=flowed;

Johan,

The idle position of the throttle is controlled by a screw that is set at the factory. You should never have to adjust this screw as the idle speed is controlled by another screw (a big one on top of the throttle body) that controls how much air bypasses the throttle.

The idle position switch is supposed to be set such that it closes when the throttle is in the idle position. This signals the ECU that the engine is idleing and the ECU makes the necessary adjustments in timing, mixture, etc. to allow the engine to idle properly. If this switch is not properly adjusted or if it is broken, you could experience the symptoms you described. It is easy to check that the switch closes properly at idle with an ohmmeter.

MM

>From: Johan Nyberg <johan.nyberg@ABC.SE> >Reply-To: Johan Nyberg <johan.nyberg@ABC.SE> >To: vanagon@GERRY.VANAGON.COM >Subject: Throttle adjustments help wanted >Date: Thu, 13 May 1999 17:39:09 +0100 > >Hello List. > >I'd like some tips on the two settings on the FI throttle body. > >1. The idle position of the throttle, and its relation to: >2. The idle position switch. > >I have serious bucking/ jumping when coasting at very low rpms. Any ideas >welcome. > > > ************************************************************ > Johan Nyberg, Sweden N 59o E 17o 25" > '86 Caravelle C > 1Co 13:12 > ************************************************************ > >

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