Starting issue, probably electrical
I have an 01 WJ that is making a really rapid clicking noise when I try to start it. The short version...
I drove it to lunch, then home, about 20 miles round trip. ~30 minutes later I got a really rapid clicking noise from the engine compartment, and the dash display was flickering on and off rapidly. As soon as I released the key from the start position I was also rewarded with a clicking noise from the fuse box area under the dash.
What I've done for troubleshooting: I went to jump it from my wife's car. The flickering dash issue went away when jumped, but the rapid clicking from the engine compartment did not. Had my wife turn the key and I thought I had isolated the noise to the starter. Replaced the starter and still have clicking that I am having troubles tracking. Definitely inside the engine compartment, and between the battery and glove box area, but nothing I can specifically track down.
I've checked all the external fuses, the main electrical fuses, cycled thru PRD21 and back to make sure it wasn't that switch, physically checked the grounding connections from the engine to the frame (also with a DMM), and verified continuity from the battery to the solenoid. I even tried the ignition switch three times to see if I got any error codes, and all I saw was "done."
I'm thinking about swapping out the starter relay, but I'm out of ideas after that. I know I haven't done it all, and I might have missed something I tried in troubleshooting, but I'm open to any ideas you might have for me. I also like a good joke if you don't have any ideas.