I have a 1999 b2600 that keeps coughing and splattering. I have replaced the spark plugs, leads, dizzy cap, O2 sensor & put a second hand air flow meter on it. I have also ran a diagnostic test on it the only things that came up was the o2 sensor and the air flow meter (this was before I changed the o2 sensor). I reset the codes and ran perfect for about an hour and started to lag again. What could be causing it to splatter? Any help will help thank you.
Wednesday, December 5th, 2012 AT 4:02 PM