First time poster needs help w/SES light problem on a 95 Lumina 3.1

[kenrap]

Hi all! - I'm a long time lurker so I know there are plenty of knowledgeable folk here.

My problem is this.. On my wife's 95 Lumina sedan 3.1 (133K miles), the SES light will come on whenever I get above about 45 mph and let off the gas for 4-5 seconds, like drifting down a hill at highway speeds. Turning the car off for a few minutes resets the light. But as long as I stay under 45 mph the light will not come on. When this first started, about 2 months ago, the light would sometimes go out on its own, mostly on long drives. But now, once it's on, its on until I turn the car off. (Note; This is not an ORB II, so it's a bear to scan.)

Now I know from reading this forum for the past two months, that this is more then likely caused by carbon build-up in some passageway somewhere, and/or a tube of some kind. (Sorry, but I don't remember the names, and of course now I can't find the posts where I read about it.)

[So here's the part I need the help with.]---> Since I don’t want to just start disassembling things until I find something that's clogged, I was hoping that someone here would be kind enough to walk out to their 3.1 with a digital camera, and take a picture of their finger resting on the part(s) I need to unclog, and then post it here. I know this is a lot for a newcomer to ask, but it really would help speed up my repair. (And might also help other lurkers with the same problem.) I have all of the tools needed to do the job, and 30 years experience tinkering with cars. I just need some direction. :-)

So if anyone here could point me (literally) to the likely suspect(s), it would be greatly appreciated! --Thanks!

[maxwedge]

Welcome to your first post on AF. Without that code you will not really know what to do here, you are probably thinking about the egr valve, but hold up till you get the code somehow.