My old 114 230/8 did the same thing to me, once. Thought I'd jump right out of my seat. I lubed the cable with a combo of graphite lube (messy stuff, wear rubber gloves and don't get it on your clothes) and some simple white grease. I pulled the cable part way out from the housing and rubbed the grease and graphite all over it. Hasn't been a problem since...did it over twenty years ago. It's the original cable, too. I've replaced two center driveshaft bushings, but not that cable.

230/8