When I start my car when it's cold or at temp. it starts really hard (loud), but starts really quick (like a normal car would) after started it runs perfectly fine until it gets up to temperature and idles down to normal (about 7-800 rpm) then it idles rough, at a 1000 rpm it smoothes right out. I have done and checked all the normal tune up stuff but now I am looking for other explanations. The only thing that I can think of that might both symptoms together is that the car has 200k on the original motor mounts. I might change these anyway, does anyone know how much they cost and where to get them/how hard they are to change out?

Thanks

 

it might be what you think. i think you should check all vaccuum lines and everything over again