T2 not idling like it should
 

I have an 87 t2. My 7 seems to have a problem. When I first start to go somewhere it idles rough.

I shakes a bit. And I no it not an internal problem with my engine since I just got a new one and it's on it's 4537th mile.

I have a nasty exhaust leak. (so I don't know if that'd effect it) I need some help.

After it warms up it gets a little better. Sometimes before it warms up is idles as if it were gonna stall.

I don't know what to look at... everything is still in tact I haven't removed my emissions yet (no time with college and work). and I still have my ac. My thought go to the huge exhaust leak I think I may have in my (possibly) cracked turbo manifold,

I had a bad leak before I changed out my exhaust. I discovered that the leak was comming from my O2 sensor. When I went to take it off it was lose. BTW it's a bitch to get to.

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