I wanted to reset my check engine light to see if a problem I think I fixed resurfaces, so I disconnected my negative lead from the post. When I reconnected the lead the car refused to start.
Occasionally it will click for a few seconds when I crank, and then there is nothing. Most times there is just nothing from the get go in terms of engine sounds. All the dash lights come on, the headlights come on bright, and the radio comes on. The only noise I hear from the car when I crank (besides the occasional clicking) is a sort of "hiss" that I think is the fuel pump.
The only oddity I've noticed is that the lead seems to be a tad loose on the post but it is as tight as the screw will go. I tried shimming around it with some aluminum foil (as someone suggested me) but that did not help.
Has anyone experienced this issue or have any thoughts? Thanks.
EDIT: I have not yet jumped it or tested the battery. I am waiting on my girlfriend to get home to do those things since I need a working car for that.
EDIT2: Unable to comment since I'm new. @Arturs, I only had to disconnect the clamp on the post, nothing else. I looked for broken wires and all I found was on one of the two wires leading off the negative lead the cladding had broken open in a small spot, but the wires inside looked fine. The problem I was checking on was something with my exhaust/emissions from a long time ago, I just hadn't gotten around to resetting the light.
EDIT3: @Ben I mean when the key is in the start position.
EDIT4: I may have found the culprit. The negative terminal on my battery leads off to two locations: a wire to the body and a wire to part of the metal on the engine. Using a multimeter I'm reasonably certain that the wire going to the engine isn't grounding the engine properly. Am I correct in thinking that means the starter isn't getting grounded?