Not unless it crashes into Nibiru and comes back on the return visit, expected about... well, whenever the next nut says it will.
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An object that does not modify it's trajectory will keep it's trajectory. Therefore, if it were planned for it to go in an orbit, it would be planned making this findable on any astronomy website, making you stupid. It would be in an orbit right now for your question to be a half yes. And it has gone past the escape velocity... this question is impressively stupid.
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No, Voyager is travelling too fast for it to ever come back to the solar system. It has achieved solar escape velocity.
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No. Both spacecraft are travelling faster than the solar escape velocity.
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No they will not return. That is why there are messages on board from the Human Race saying Greetings to our Space Brothers out there. We were here in the Milky Way.
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No. Their orbits / trajectories are hyperbolic, open ended, for a reason.
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No. They are traveling faster than solar escape velocity.