Date: Tue, 13 Jul 2004 18:55:30 GMT From: - Bob - <nonamenospamace.com> Subject: Re: 2000 9-3 rough idle at start
On 12 Jul 2004 11:32:32 -0700, craignospamonet.com (Craig Christian) wrote: >Hi, > > >My wife's car, a 2000 9-3 convertable 2.0l, idles extremely rough at start >for about 60 seconds and then it smooths out. I know nothing about Saab, >but do my own maintenance on my vehicles. >This problem sounds to me like it could be a partially clogged air or fuel >filter. Before I spend the money on them, does this sound correct to >the Saab owners out here, or is it some wierd thing like the DI (?) >cassette. (What is that thing anyway?) If the rough idle goes away after 60 seconds, it's probably not a clogged air or fuel filter. If you have not changed them recently, it would not hurt. Anyone can do the air filter in a couple of minutes. You can do the fuel filter but you have to release the pressure in the system first - don't do it w/o doing that. I doubt that it's your DI cassette. The DI is a set of four coils that provide the high voltage to the spark plugs. The installation of individual coils is done to allow the engine (ECU) to control spark to each cylinder individually and to eliminate the secondary ignition wires. The DI usually causes run time problems (misses, check engine lights) when it goes bad. It might change after heating up a little but it usually gets worse, not better, when you apply heat (run the engine). If the timing of the problem is very similar each time, I'd guess that you have a "pollution" valve open and then closing (or vise versa), or a manifold leak, or perhaps a bad cold start injector (although I don't think that problem would go on for 60 seconds.). How does it run otherwise ? How is the "power" when you drive ? >BTW, email is broken, so please respond here. > > >Craig C.
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