I am having a problem with my MAF sensor. I had the typical symptoms of a bad sensor and tried to clean it but I think I touched the part inside with the spray nozzle. I bought a nef MAF sensor yesterday put it in and seemed fine. Today I drove for 30 minutes and BAM the same symptoms except it dies at idle. Got home and took the new one out and cleaned it and for now it seems fine again. What is going on ?