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Date: Mon, 16 Aug 1999 10:56:02 -0400
From: "Eric Law" <elawxnospamxnopsamecsxnospamx.com>
Subject: Re: rough idle -- 90 900 SPG


Also, not to sound too negative, but I'd think about looking for another mechanic. Idle regulator problems are very common on European cars with Bosch fuel injection (Saab, Volvo, VW, BMW, Mercedes...), and if he's saying you need a "computer diagnosis", I'd be a little worried... Eric Law J Dorsey <jdorseynopsamable.net> wrote in message news:37b760ee.0nopsam.cgocable.net... > I have had the same problem with my 87 spg,there is an auxiliary air > regulator on top of the motor towards the distributor with an electrical > lead on top and two approx 1" hoses as well.If the hoses are leaking this > will cause the eratic idle that you seem to have. > Also if you are working on the regulator you may want to take the time to > clean it at the same time,when it's removed use either a cleaner such as > "gunk" to spray inside both holes where the two hoses attach. > After a thorough cleaning spray in some wd-40 to lubricate it before > re-installing. > Hope this helps! > Jim > HAMMERSPGnopsamAIL.COM > JS <jsweetnopsamneering.ucsb.edu> wrote in message > news:37b61923.15944004nopsam.mindspring.com... > > My 1990 900 SPG has an intermittent rough idle problem. The > > car seems to run great except for the fact that at a stop the idle > > fluctuates between 700 and 1400 rpm as if the computer is constantly > > over and then under compensating. When idling properly, it purrs at a > > steady 1000 rpm. This problem only seems to occur after driving the > > car for a bit on the freeway. I have had several vaccum hoses replaced > > and tightened and my mechanic says that his only recourse is to start > > an expensive diagnosis of my computer. > > > > Any thoughts? > > > > > > Thanks > > > > jsweetnopsamneering.ucsb.edu > >

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