Check all the obvious connections, make sure your air cleaner is on tight with no leaks, Check the connector to the new O2 sensor. Check your timing, look for exhaust leaks, let's see.......there are a million things to look at! Can you be more specific? Did it ever run smooth? What gooey stuff did you scrape out? It shouldn't be gooey! Maybe that module with the goo just isn't any good anymore.Quoting Wlad Alexander <wladalexander@xxxxxxxxxxx>: > My 82 Imperial (with EFI), starts fine (runs rough) but unfortunately > splutters and dies when put in gear. What could be its problem? > Thanks in advance > Wlad the IMPaler > > >