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On 5 Apr 99, at 15:24, Latherow, Robert wrote: > Oh my 412...I mean Fastback, the D JETRONIC (Same as the Type 4, > curiosly enough) isn't idling down on command. On the D-Jetronic FI the speed is controlled by the amount of air let into the intake manifold. The brain then just provides the appropriate amount of gas to go with it. If your idle is too high that only means one thing: there is too much air getting in. You need to find out where the excess is getting in. The only leaks that count are those after the throttle valve. Look for hoses pulled off, or cracked or throttle valve not closing all the way. It is common to find many worm gear hose clamps on the large hoses that connect the intake air distributor to the air runners, but this is usually a misdiagnosis. Look for something that has really come loose. Jim. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe