Car not ideling and surging

Well the motor thing sound like it may be a A/C compressor but hate to say it but if your getting too much pressure in the engine that your blowing vacuum hoses it could mean other than your hoses are dry-rotted that the head gaskets may have blown too, letting compression/exhaust into the engine instead of all of it out the exhaust pipe. Either way it needs looked at by good shop you trust. Its a little hard to figure out exactly what you mean not seeing it and going on word of someone not learned in auto talk, not meaning any disrespect there.

With the vacuum hoses bad/and possible bad head gasket fowling the spark plugs and the air compressor trying to kick on is enough for it to die as the engine relies on the vacuum to run several systems properly.