1989 Toyota Pickup
After replacing my engine with 214K miles, my new engine has a strange
behavior. It idles at about 600rpms and slowly climbs to about 1400rpms,
then suddenly sputters and drops back to about 600rpms. This repeats
forever until I figure it out or turn off the engine. lol lol I'm thinking
an emissions/vacuum problem, but I don't really know where to begin.