my dc been idleing low where it almost turns off on me its been happening for a min already i changed the alternator and battery dont know if that had 2 do with it.... should i change my timing belt? or just get a tune up since i havent got one since i bought the car last aug.... (i have changed oil thou)

 

First off. Dont replace anything until you know it needs to be. Low idles can be cause by more then one thing. There are sticky's on the home page and you can search for it as well. Most idle problems are very common and require nothing to be replaced to fix. Just do a little more research.