0124vcummins New member Joined Feb 11, 2009 Messages 53 Jun 7, 2009 #1 when driving at a low rpm 1500-1900, the tach jumps back and forth about 200 rpms or so. Could this be a fuel problem?
when driving at a low rpm 1500-1900, the tach jumps back and forth about 200 rpms or so. Could this be a fuel problem?
