Date: Fri, 10 Oct 2003 13:24:49 -0400
From: (Ramsey Frist)
Subject: Re: 9000CSE at 2200rpm

In article <dFAhb.33$>, "SAABurger" <> wrote: > Ramsey, > I posted to this group yesterday (see thread "2.3 liter hesitates on > acceleration") explaining how an exhaust leak was causing my problem, and > how a new front section of exhaust cured it. > > What I didn't say in that post was that the hesitation was strongest when > accelerating through about 2000 rpm. The difference between your 2200 and my > 2000 rpm could be accounted for by our engines being turbo and non-turbo > respectively. For me, the discontinuity was very marked just before I had > the exhaust replaced, but gone completely as I drove home from the > exhaust-centre. > > It is my guess that there's a discontinuity in the fuelling logic at about > 2000 and that this normally unobservable artefact becomes imperfect when the > lambda sensor (which monitors oxygen level in exhaust gasses) is confused by > a leak. > > From my experience I would have to recommend having your exhaust and lambda > sensor checked. I would also advise that my car passed two MOT tests whilst > exhibiting this problem, so your leak (if you have one) may not necessarily > be observable on the ramps. > > Adrian > 1992 9000CS 2.3-16i > > >Thank you Adrian, I will check it out. I replaced the front Oxgyen sensor (post 94 CSEs have one before and one after the catalytic converter) about 3 weeks ago. That cured the "check engine light" but had no effect on the 2200 rpm discontinuity. Best regards, Ramsey

Return to Main Index

The content on this site may not be republished without permission. Copyright © 1988-2019 - The Saab Network -
For usage guidelines, see the Mission and Purpose Page.
[Contact | Site Map | on Facebook | on Twitter | Shop Amazon via TSN | Site Donations]