[V8] Loss of Power, Surging, Just Bad Behavior in Cold

[George Kauffman]

During the arrival of the cold season here in Penna., I noticed my 1990 V8
(160,000 mi.) has been idling unevenly, slight hesitation when first
accelerating, and a smell when idling (most of the time). The smell seems to
be a sulfur smell although sometimes it smells more like wet wool burning.
For thos of us in the northern climes, like wool gloves smell when drying
out on a hot radiator.

The car runs fine on the highway & mileage is at about 18 mpg city/highway.

I've added dry gas and switched to high test, with little or no effect. I
haven't replaced any sensors since I've owned the car (about 60,000 mi.) I
was thinking O2 sensor? Any suggestions?

Many thanks.

George Kauffman