Just a brief note from someone who hasn't posted in this group since about '96. THANK YOU. Recently, my manual '94 SL2 (~78K miles) began having a most annoying problem (the first actual mechanical problem I've had with it). As I would approach a stop sign/red light and take the car out of gear and apply the brakes, there was a noticeable decrease in RPMs which would unnaturally go way down (to about 200) and then immediately pop back up to (almost) normal idle speed. There was also a corresponding dimming of dash/headlights to go with this.
Last Monday, I brought the car into the local dealership (Saturn of Anchorage) and they diagnosed it as being a faulty alternator and a battery that was not holding charge. This seemed reasonable and expected, so I went ahead with that repair. $420. Ouch.
Picked up the car and drove away. The problem was still there.
So I hopped onto Google Groups and began searching and came up with a few posts about the EGR system.
I printed out the threads, and showed them to the head mechanic. All the while I was sure to convey that I was not trying to tell him how to do his job, but merely pointing out something that he might want to look at.
Well, he read them and followed them. I now have a fixed auto. :-) Thanks rec.autos.makers.saturn!