Date: Fri, 22 Sep 2006 19:16:44 GMT
From: - Bob - <>
Subject: Re: Emissions & DIC

On Fri, 22 Sep 2006 10:57:42 -0400, Fred W <Malt_Houndnospamm-me-not*> wrote: >J. Harris wrote: >>>J. Harris wrote: >>> >>>>Hello All. Our '97 900SE failed it's emissions inspection; >> >> specifically, >> >>>>the code for a faulty cam-shaft sensor was read (gas cap passed and ppm >> >> NOX >> >>>>passed). After the local independent Saab specialist re-set the >>>>codes/computers, the Check Engine light stayed "off" for about 20 >> >> miles... >> >>>>Question: Is the next most logical fix a new Direct Ignition Cassette? >> >> And >> >>>>while I understand it's a quick/easy replacement for most DIYers, what >> >> about >> >>>>re-setting the codes for the next inspection? Any other possible >>>>ideas/repairs needed? Thanks in advance, >>> >>>Ummm... why wouldn't you try the camshaft sensor first? >>> >>>-- >>>-Fred W >> >> >> Good point. I think the mechanic already checked it; hence his suggestion >> about the DIC. Also if it helps, the spark plugs were changed 3000 miles >> ago at 93K miles for the 90K/95K service. >> >> > >Based on MRFWU theory (Most Recently Fiddled With Unit) one of the plugs >could be bum. There is no camshaft position sensor on the engine. The DIC does the sensing through some process I've never quite understood. So, if you get that code, it is either the DIC or the plugs. If you used the stock NGK plugs, then it is possibly the DIC. If you used some other plugs, change them to the right one. The DIC is a 10 minute DIY job - the torx driver is in the trunk. You do not have to rest the computer, it will reset itself. In fact, in some states you can fail for have a computer that was reset too recently.

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