Date: Mon, 29 Nov 2004 18:28:25 -0500
From: ma_twain <>
Subject: Re: EXH light on '86 900

Dave Hinz wrote: > On Mon, 29 Nov 2004 13:51:50 -0500, KeithG <> wrote: > >>1) EXH light is a mileage thing I am pretty sure. There is a reset >>button back there somewhere. Search on Saabnet. I am sure it will turn >>up. This is only on the CIS cars (8V here in the US) >> > > Ugh. Saabnet's search function. To save anyone else the pain, here's > what I (eventually) found: > > "All that is required is follow the wire from the instrument cluster > down into the dash to the box, which has a reset button on it. It might > be easier to reach from underneath." > > Yes, it's an 8V CIS. I'll find the button, and then I'll be able to take > the piece of duct tape off of the instrument cluster. Fun buying an > almost 20 year old car from at least two non-saabish owners. At least > 3 of the rotors were warped, the gas cap was, well, not just wrong but > didn't seal _at all_, the dashboard had been pulled out to install a > POS radio, the heat didn't work, and the car had a HUGE vacuum leak. > > The lack of heat and the vacuum leak were, of course, the rod to the > heater control valve from the dash panel, and the vacuum switch > connector to the back of the switch. Put those back in, fixed the > no-heat, fixed most of the running problems, fixed the heater control > stuff, fixed the moan from the vacuum reservoir check valve (due to > constant flow). Replaced about 8 feet of vacuum hose that was > slightly crunchy and/or swollen. > > Brake rotors (front) went well, but I had to make the rotator tool > for the pistons because I lent mine out (anybody? Hello?) and > don't remember to whom. Bled the brakes, they still sucked. New > brake master cylinder, all better. Rebuilt cylinder was only 30 bucks > more than the rebuild kit, so I went the lazy way and used it. Brakes > now work great. > > > >>2) normal. You are creating a big vacuum leak by opening the filler cap. >>IIRC, It screws with CIS more so than LH. >> > > This car is, in fact, CIS. Haven't had one in a while so I'm not > surprised that I hadn't noticed that. > > >>The gasket under the cap is >>pretty important, too. It is probably pretty hard by now and should be >>replaced. DO not think it is available separately, but one can be made >>from a piece of rubber... McMaster Carr or local inner tube? >> > > I'll check and proceed accordingly. I have some butyl rubber membrane > from a roofing project, I'll check oil compatibility first though. > > >>3) This is an 8V, no? Never done it on an 8V, but guess it is probably >>similar to a 16V. remove distributor, replace oring, replace >>distributor, set timing. >> > > I didn't think there'd be anything strange there. ISTR that there's > an offset cog type thing so I can't screw up the timing. Need new > plugs and to time the beast anyway, might as well do cap & rotor while > I'm at it, I suppose. Valve cover leaks too, oddly enough, and it looks > like when I have the distributor off is the perfect time to deal with that. > > Thanks, > Dave Hinz > > I have the full Saab Factory shop manual set for the car. You can borrow it or I can scan pages if you need the information. I drove the 8V 1986 900 for 16 years. It was a great car - lots of fun in the snow! Now I drive a 1993 Commemorative - red box, lowered suspension, and short shift kit :-)

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