I had this on my old 1992 SE. It did it going left, right, medium-heavy decel, medium-heavy accell. It was a total pain. I changed my fuel pump twice thinking it was weak. I also changed the FPR once. Never got it fixed. It did this the last 40,000 miles I drove the car before I was rear ended. What a nuisance. I was getting very frustrated with it. My mom'* 1992 Park Avenue ultra SC doesn't do it. As for my brother'* 1992 SSE n/a he hasn't really driven it being he hasn't had a chance to put the rear bumper cover on it since he got it three weeks ago.
I live with my parents yet (yah, i'd like to move back out, but after being laid off at 3 jobs last year I only brought home $7500 last year, down from $31 the previous year) with one brother and one sister and there is a total of 7 1988-1995 3800 car'* that are driven at least 3-4 times a week and in the last 10 years my family member'* (there are 10 kids) have had approx 20+ 1988-1995 3800 car'* and only my 1992 Bonneville SE (RIP) had that problem (I drove that car 100,000 miles and other than that I only changed plugs, plug wires, 02 sensor, and serpentine belt).
Enough bandwidth used here. I'll look for something I'll be usefull for.