Just bought an 88 YJ Laredo.
Was running well when I bought it. Then I gave it a full service etc,then put in a new fuel pump. Timed it. And then when i get it out on the road at lower rpm's when i put my foot on the gas it splutters and feels like its going to stall. When warmed up it runs a little better. but still splutters when at low rpms. Going to change the oxygen sensor, although it has just passed a smog test! Any ideas on what could be my problem? What else should I be checking? Thanks for your help.