Yeah thats kinda what i was thinking but i dont know why it would only be every once and a while

So not to long ago I noticed a weird grunt like noise coming from my Protege and I have no idea what it could be. When Im idling it will grunt a few times every once in a while and my RPMs will raise about 100 or so rpm. Has this happened to anyone else here? Edit: Its a 2001 mazda protege ES heres ...

I just wanted to say hello. I was on mazdas247 for a while but Im glad I found a Colorado site. I have a 2001 Protege ES all it has is a short ram as far as performance. http://i1129.photobucket.com/albums/m508/Akiyobwaap/176721_1892268712534_1416020951_2149253_52925_o.jpg http://i1129.photobucket.c...