Recently replaced the MAF, got one used from a salvage yard, the first didn't work, gave me bad idle at initial start up but the second seems to be doing the job, there's a little idle when truck is started but not as bad, but it seems to be running smoother. Plus I think my cel is gone,which is good! I've cleaned the MAF, cleaned tubing in the area. From what I know I don't have any leaks either. Is the MAF creating the problem or is there still something else I'm missing??