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Date: Fri, 2 Nov 2001 23:23:56 -0800
From: "chrisnew" <chrisnewnopsamorld.com>
Subject: Re: '97 Aero Acceleration Issue


Check the vacuum hoses, especially those to the APC valve, and the valve on the L/H inner wing. The black plastic boost control valve (also known as hooter valve) may also be faulty,a and is a cause of low boost. Identify the vacuum line to it-if you can suck air through it, replace it Chris KeithG <noonenopsamspring.com> wrote in message news:9ru9e9$q6c$1nopsam.atl.mindspring.net... > Joseph, > > Try Larry Daniels over in Mariemont. I hear that there are a few good techs > there. Also, you might try Just Saab North. My father has had a bit better > luck there. As for ideas that may be causing your problem. I would make sure > that the APC system hoses are connected and not split. Yours are probably of > silicone and are probably fine, though. I would make sure that the knock > sensor connector is cleaned and that you are running premium fuel. I would > replace the fuel filter if the problem persists. I would replace the spark > plugs with new, proper NGK brand plugs as listed in the owner's manual. I > would inspect the DI cassette to see if there is any indication that the > seals have failed and the oil leaked out. > > Good luck > "Joseph Hoh" <jhohnopsam.com> wrote in message > news:5012f290.0111012121.f4beb31nopsaming.google.com... > > I am not very savvy when it comes to cars, but I will try to include > > as much information as I believe is pertinent. > > > > I have a '97 Saab Aero 2.3L Turbo Automatic with 82,000 miles. > > > > Issue (about 2 weeks old): > > When cruising in 3rd or 4th gear (40-60 mph), and I punch the gas, the > > turbo indicator goes just into the yellow/red alternating area (never > > above), and the vehicle stutters briefly, but continuously. If I am > > in 4th gear, the problem occurs when it downshifts into 3rd. If I am > > in third, I really need to punch it for the stuttering to happen. > > > > Additional info: > > - I still am able to accelerate quickly, but until I ease off the gas > > and the turbo indicator reads 3/4 yellow, the stuttering continues. > > - I use premium gas, clean air filter, regular oil changes. > > - The problem NEVER occurs while accelerating while in 1st or 2nd. > > - My turbo indicator NEVER, NEVER, NEVER reaches into the solid red > > (and rarely, if ever, deep into the yellow/red alternating bars). > > - In April, I had the head gasket, radiator, and AC control unit > > replaced. > > - After parking, I notice that my radiator fan is blowing, even though > > the temperature indicator NEVER, NEVER, NEVER reaches the horizontal > > position or higher. > > - I just had my alternator replaced as a result of diagnosing an issue > > where my radiator fan stayed on all day and drained my battery. > > > > From reading posts, it could be: > > APC valve? Wastegate? Spark Plugs? Distributor? Transmission? > > > > I have little faith in my dealer (Just Saab, East - Cincinnati, OH). > > I reported the problem at the same time as I had the alternator > > replaced, and they returned the car as fixed, but the problem > > presented itself within 2 miles of the dealer. > > > > Please help! > > > > Joseph Hoh > > jhohnopsam.com or jhohnopsamtown.com > >

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