Date: Wed, 19 Apr 2000 16:54:14 -0700 From: "wgmoore" <wmoorenopsamcrest.net> Subject: Re: Check Engine Light - chapter 3
could be the cat. See if your mechanic would run an emissions test for you with differant rated gas. If you have a big differance, the cat may be over heating . "Geoff Waters" <grw888nopsamdnet.att.net> wrote in message news:38FCFAD0.E39DFE3Dnopsamdnet.att.net... > Well some may remember my question a month or so ago about > the "check engine" light on my 96 900 SE 2.0t. The first > diagnosis by the dealer's repair guy was "don't know." The > second time it came on he decided it was that the auto trans > "winter mode" switch had failed. > > Now I can make it go on or off by changing the gas. One tank > of expensive 93 octane premium - light goes out. One tank of > 87 octane regular, light goes back on. I've done two cycles > now. So, is it the oxygen sensor? This is my fifth Saab > (first turbo tough) and I never saw this light go on before. > > /Geoff