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Date: Mon, 14 Feb 2005 07:36:39 -0500
From: KeithG <noonenospamay.com>
Subject: Re: 1993 Aero 9000 Gremlins - help!


Well, I'll give it a stab. Dexter J wrote: > Salutations: > > Well I have gremlins that I can't pin down. > > 1993 - SAAB 9000 2.3 Aero 5 speed. > > Prev Owner - Mods: > Switched TCS > Replaced TCS controller YIKES!!! TSC (Yecchh!) > Head Gasket > Cut out Karmon Audio Head replace with Sony Xwave WHY? I'd love to have the OE harmon head unit in my CS > > Gremlins: > > When I picked it up, all seemed fine for a fairly long trip back home. > > Then a couple of days later - SRS light kicks up.. Gave up fixing it > under recall, pulled bulb - thank you SAAB/Isuzu Halifax - so nice too > know my previous *decade* of business with you was worth so much of > your attention when I needed some help with a model I didn't buy with > you because you don't sell them anymore - no I don't want a 9^5... > Grrrrr.. SRS, probably the hairspring behind the steering wheel, but you really need to have the 1) code read out then 2) the system reset AFTER you replace the defective component. This is integral to the safety of the car. It'll be spendy, but could be worth it. This car has belt pretensioners as part of its safety systems. If these can set an SRS light when they have an error, I'd be concerned. I do not know if they can or not. Just assume I have no idea what 'code 5 and 7' are... > > It has been kicking check engine codes 5 and 7 irregularly for a while > and kicked into limp mode a couple of times - so I replaced the DI. > Hoses are starting to harden up - so have replaced one or two and gave > it a new OS sensor. > > Voltage seemed irregular - had the alternator serviced by a good shop > and it's now running strong and even. > > Still kicking code 7, which seems to go away on it's own every so often > if I don't get around to pulling the battery. Mostly after a hesitant > starting situation. Hard start - short while later the check engine > light goes out. However, this seemed linked to limp home and DI > replacement. > > My dash lights seem to work almost opposite. They seem to brighten up > when I cover the dash sensor - they seem to get darker when I remove my > finger. Dunno, here. The trip computer/clock has this sensor in it. I replaced mine with a rad shak photo transistor to fix an 'always bright' light. > > The ACC unit did something odd recently. I seem to suddenly start > running full tilt - then turned itself off while in heater function. I > had reset it and it seemed to go away. > never sen this, either. > The dash voltage seems to read between 10-13.9 (cold start in the > morning) - but the voltage at the battery is dead on at 14.1-2 as it > should be. > > I am not seeing the boost figures I should in the dash and it ran about > 170hp on the dyno at the wheels. This is supposed to be about 50hp > light for the aero, my turbo gauge runs into the broken yellow and no > further. > low base boost? The Trionic cars should be at 6psi base boost to give the trionic enough boost to 'work with'. Run premium, do a few full throttle accels to 'train' the trionic, verify base boost and report back. > Finally - no cruise control. This can be more expensive around here > than you can imagine having now picked up my first speeding ticket in > about 15 years (140kph in a passing lane in a 110kph zone). the '93 has a vacuum pump system like in an earlier 9k or c900. if the basic bits (pump, vacuum lines and pedal switches) all check out, I would suspect the cruise ECU. IIRC, it is the same as a C900 '92-'93 and I have personally had 3 of 4 either dead or intermittent. Intermittent ones can sometimes be fixed by stripping the red gunk off the board , removing all solder and resoldering all components. > > I'm about to start the work sheet for the spring as I expected to be > fixing some bugs with the system. Would appreciate any leads on any of > the above for this model and year you might have. > > Cheers. > good luck, KeithG

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