I have a 2006 TJ Rubicon MT. A couple weeks ago, my engine randomly died while driving. It happened a couple times but then was problem free for a 3 hr drive from Georgia to Alabama. I noticed that my fuel burn was extremely lean, as I got 150 miles out of 9 gallons, but returned to normal after I filled up. Thought it potentially might have just been bad gas. 2 weeks and a 6 hr drive to Missouri later, and the problem is back. The engine quits like the key got turned off, no sputtering or nothing. Normally it doesn't throw any codes, but twice out of the 30ish times it has died it threw codes for no SKIM and cluster lost power. When it dies, it will start right back up again if I turn the key all the way off and then back on. If I only go one click back and then try to start, it will just crank and crank without turning over. I am thinking it might be fuel pump but wanted to see if anyone knew what it might be. I took it to a shop to look at (temporarily relocated for work and light on time/facilities to diagnose and repair myself) and they were stumped.
Engine Randomly Dies
- Thread starter Carrington59
- Start date
I'm thinking more electric problem , ignition switch or connector to switch.
Battery terminals ,grounds .
Doesn't sound like fuel pump to me more of electric al problem.
Battery terminals ,grounds .
Doesn't sound like fuel pump to me more of electric al problem.
I did replace ignition switch and switch actuator spring 2022 with Autozone chinesium when I (unknowingly at the time) had a bad PCM. I can try replacing them local auto part for now while I source a better ignition switch. My concern is that since it went 2 weeks problem free before it acted up again, how could I tell if I solved the problem or it just decided to behave for now? Is there a way to test the switch and see if it is having intermittent failure? I did check my battery connections and those are good.
Just picked up new MOPAR Ignition Switch and Crankshaft Position Sensor. I will update on results after I get them in. I rechecked the codes and found an additional code. The codes that came up were P0513 (no SKIM), U0155 (no cluster), and P0201 (Injector 1 circuit open). I will check the wiring for injector 1 as well while I am out there. Hopefully, the problem is solved with either the parts or just an exposed wire for injector 1 that needs to be covered.
Well no luck on that. Wiring for injector 1 looked fine and parts installed. Started it up and it idled fine for about 5 min then it revved up from about 700 rpm to about 1100 rpm and died. Started up perfectly fine right after. Idled for a couple min, revved up again to about 1000 rpm but saved itself this time. The car beeped at me about 30 seconds before it happened each time but gauges were fine and no codes thrown.
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Just wanted to give an update as I think I found the issue. The software on the PCM just had to be reset. Drove 12 hrs roundtrip this morning to pick up my backup PCM and see if that worked. Before I installed, I decided to reset my PCM back to stock (I have a Superchips Traildash 2 that I have ran since 2019 problem free) to see if maybe that might have been the issue. I set it back to stock and it idled fine for 15 min. I revved it every now and then, but everytime it has died, it has been within the first 10 min of driving. Somehow the software on the PCM/tune must have went bad (tune had been loaded since January). If this ends up not being it, I will update post again.
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