I started having problems starting my 99 Jeep wrangler when I went with my daughter to the hardware store and came out to find that it would crank but not start. Looked at everything I could think of and realized that I had no gauge readings. Ignition tumbler was already worn out - could pull the key out at any time. I tilted the steeing wheel up and all of the sudden I had gauges and she started right up. This went for a few days before happening again and when it did, the old steering wheel tilt worked each time, until it didn't. I replaced the key switch and my gauges looked good and I was on my way, until the next morning when she wouldn't crank. I thought that since I was having the ignition problems that I would change the ignition switch. Worked like a charm, but now it starts and runs for a couple of seconds and dies. It will start right back up and run the same amount of time and die again. I can smell gas but have not found any leaks. It does not spit or sputter before it dies. Looking for a place to start looking again, hope you can help.

. Check all under hood and under dash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-3.html#post252145

Be thorough, since it will save a lot of time and money.

. Replace spark plugs (Champion only), if they have not been replaced recently. I've seen major problems with non-champion plugs on Chrysler products. Other plugs are breaking down quickly.

. Check ignition harness.

. Thoroughly inspect and clean negative battery cable/ground and main ECM ground.

. Check for spark at each cylinder. If weak, focus on coil and distributor-related components. Many Chrysler products don't have traditional Ignition Control Modules. If your's does, the ICM is a prime suspect. You didn't specify what engine you have.

I suspect the problem is with the ignition switch/harness or a fuse.