I power washed my Jeep, including the undercarriage. When to start it up, turned the key, blower and lights came on for half a second, then no power. I popped the hood, touched the positive terminal, then the power came back.
Ran normal for about a week, then got it in it one day, turned the key, and the same thing happened. Opened the hood, went for the rod, and the power came back.
It has been cold here, 5 to 30 degrees. The day the second occurrence happened, it may have been slightly above freezing.
Any ideas what happening? Hasn't really been a problem and not hard to fix, I just don't want it to become a problem at a bad time.
Another issue, maybe related, when its cold, the oil gauge and charge gauge light come on, but the tank level and temp gauge will stay off for about 10 minutes of driving. Then they come on on their own.
If you're injected you may have gotten water into your ECU harness. That will wreak havoc on everything electrical. Remove the harness connector above the ECU and look for moisture. Dry it and apply some fresh dielectric grease.
Also check under your distributor cap and ignition wire boots for moisture.