I remember an old show I watched when I was younger. It isn't Voyagers! from the 80's but it was more of an update that was in the 90's. It only had one season. I watched it around 1995 I think.

Just an old man and young teen that go back in time to recover artifacts and try and escape this guy in a robotic suit.

Steve M- Thanks for the link, but I didn't find it. I am glad you remember it also. If I do ever find it, I will send you a link to it :)