Sorry for being vague...

First off, my battery is in great shape, no worries there (tested one week ago). So, I thought there might be electrical connections between the battery and the starter to investigate.

Second, when I go to start my car, half the time it starts no problem. The other half of the time, either nothing happens (no starter starting) or the starter sounds weaker than the one that I replaced with a newly rebuilt starter (not my old one, this was from a parts store).

So far, it hasn't left me standed, but that seems like wishful thinking.

My question: what should I check before I go and pull the starter out?

Thanks much, Hugh