Good, now I have a big problem with my Automatic Sentra 2001, 4 months ago I began to fail in relief, I wanted to turn off, then I wanted He told me that it was the TPS, I bought it and then I went out with what was also the MAF. The question is: What fails can be lost to the MAF or if the MAF that they sell in Autozone rebuilt does not work? Do you have to buy the original MAF?