Date: Sat, 28 Jul 2001 20:27:36 +0100 From: Johannes H Andersen <johsnopsamsafish.com> Subject: Re: 9000 CSE idle speed
Yaofeng Chen wrote: > > Johannes H Andersen <johannes.andersennopsamel.ac.uk> wrote in message news:<3B54BE1A.4872EC6Enopsamel.ac.uk>... > > The idle speed for my 93 9000 CSE 2.0 LPT is normally 800-900 rpm, but > > recently it has crept up to 1000-1100 rpm. What should I look out for? > > > > Johannes > > I'd check first all vacuum hoses are intact and connected to the > appropriate orifice. > > Yaofeng Problem solved! Thanks. At first I couldn't find anything. Then it occurred to be that there was a faint hissing sound under the bonnet. I put my ear down in the engine and followed the noise, sure enough it lead to a 1/2 " pipe on rear side of the manifold. I don't know what this pipe was doing, but it was fitted to a nylon T with a smaller pipe leading to a sensor. The 1/2 " pipe was cracked, but turned such that the was crack hidden from view. I cut an inch off this pipe since it was generous and refitted. Done! Lesson learned: It is a good idea to listen and remember the how your engine should sound under normal conditions. Johannes
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