intake manifold needs replacing. can I drive until I can get it fixed?

A couple of questions, Is it leaking any fluids? How is it running? Is it burning a lot of fuel? It can cause more damage if you continue to drive, it could overheat, or burn a lot richer causing internal engine issues. If this has been a good mode of transportation and you count of it as your everyday car, you should not put the repair off. It could cost you a lot more to have repaired.