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  1. Elephant Hill?! (Bobby's Hole?, Beef Basin?)

    Bobby's Hole is much harder than Elephant Hill. I've done it perhaps 3 times over many years. Conditions change frequently. Best to ask someone who has done it recently or call the visitor center. It's best traveled downhill from Beef Basin and into the park. Best bang for the buck is out...
  2. Issue installing Mopar Performance Rock Rails

    It's just sheet metal - like the Jeep you're bolting it to. Not exactly cnc tolerances. Keep whacking it until it kind-of sort-of lines up, then bolt it down - done. Odds of pulling something out of a shipping box and it perfectly aligning are near zero. Has anyone taken any hits to this...
  3. (overly?) dark oil

    Pitch black oil is a part of diesel ownership. Diesel's higher compression creates more blow-by through the piston rings - of dirtier combustion byproducts. Black soot in the oil is normal and generally considered harmless. Surprised after 1600 miles you see any brown - still new.
  4. Dealer “forgot” to change the oil...

    +1 - low quality oil either before or after the change - if they changed it. What else would be free? New synthetic oil in a healthy engine shouldn’t turn that black in 400 miles - my experience.
  5. (for those living in snow only): how often do you take your rig to the car wash in the winter?

    Back when I lived in the midwest where roads were salted and either frozen or sloppy 6 months a year - as often as possible - which was futile as nothing prevented the undercarriages from rusting out after a few years. Here in CO - after a snow when the roads dry, along with everyone else.
  6. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Computer is likely flagging an "implausible" reading between the switch you just tested and the position sensor - ie, the potentiometer you went digging for but didn't get to. You press in clutch and the sensor should read low(er), because the computer sees the switch you just tested changed -...
  7. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Your first set of measurements was certainly interesting, like maybe you were on to something. However, this set is different and indicates the switch is working per schematic. The 5v signal appears to be getting pulled to ground. ~14 ohms for a length of battery cable + your probe wires +...
  8. 2021 JLUR (manual, 3.6L ESS) Won't Start

    I’m not clear on what you are measuring - you’ve pierced the insulation and all is connected as it came from factory? Note pin 3 should be 0 ohms to ground per wiring diagram - you’re reporting 180k? What are you probing to call ground? Double check all that. Pin 3 not grounded would be a...
  9. 2021 JLUR (manual, 3.6L ESS) Won't Start

    You need to test it in-situ. Use a needle to get through insulation, verify voltage on pin 2 and that voltage starts high and indeed gets pulled near ground when switched. Note voltage levels. For completeness, measure resistance to ground on both pins with no power - actuate clutch.
  10. 2021 JLUR (manual, 3.6L ESS) Won't Start

    How did you confirm the switch was good? It pulls a signal to ground, so did you check both voltage on one wire and impedance to ground on the other - while pressing in clutch? Note from diagram signal to this switch goes through radio freq module before ECU. Thus, if switch is confirmed...
  11. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Lol - that looks full-on. This is where the factory scan tool comes in so you don't have to go mining through sensors and wire bundles. It's not uncommon you can't reach a sensor, so you need to probe the wire at the ECU connector - which on a better designed vehicle should be reasonably...
  12. 2021 JLUR (manual, 3.6L ESS) Won't Start

    I would go for something indicated as “interlock” first, but if you insist - according to diagram - pin 3 = 5v, pin 2 = 0v and also 0ohms to ground, pin 4 voltage should vary somewhere between 0 and 5v as you press clutch. Problem is you have no spec to compare, but at least confirm what you...
  13. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Close everything up, couple trips around the 'hood, shift to 2H, shut down and attempt re-start. After that, find a needle and located the wires you need to probe as in that wiring diagram - assuming it's valid for your vehicle, which it may not be. No success there means clean up all traces...
  14. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Have you run the engine for a significant amount of time for the aux battery to charge, then verified the problem repeats? You might spend a lot of hours chasing your tail if not. A pro at this point will pull codes, reset and look for returned codes - then move into the data stream and...
  15. JL service manuals?

    I've used CD's and USB's from TechAuthority - they were mostly useless. The wiring, especially - conveniently missing things like connector pinouts and component location. Many "go to dealer" images inserted in place of key diagrams. Haven't seen what the present day Jeep USB's contain, but I...
  16. 2021 JLUR (manual, 3.6L ESS) Won't Start

    Nice! If it’s a sensor, definitely root cause it before calling things done. Before moving forward, I’d run it and let things charge for awhile, then let sit for a bit and retest. A is not connecting with B here yet.
  17. 2021 JLUR (manual, 3.6L ESS) Won't Start

    In a single battery system and older electronics - yes. Diagrams suggest several relays between 2 batteries and a computer that fires the relays in a way that seems non-trivial to reverse engineer and make guesses about while lacking a correct wiring diagram. Also - eTorque?
  18. 2021 JLUR (manual, 3.6L ESS) Won't Start

    During your first attempt, several relays click and it really looks like power was lost to the instrument panel after one of these clicks. Subsequent attempts seem to fire only one relay, with no change on instrument panel. Suggests on your first attempt, you had the most power and made it the...
  19. 2021 JLUR (manual, 3.6L ESS) Won't Start

    I just compared videos. Your instrument cluster shut down when you pressed the start button, his didn't. If it's a 2021, the battery may be damaged but still usable, worst case. If this were me, I would pull aux battery and put on charger - and/or pay for a 1 day subscription to techauthority...
  20. 2021 JLUR (manual, 3.6L ESS) Won't Start

    That looks like an actual load tester - but at 1500+ watts, might be overkill and possibly unsafe for the smaller aux battery. For a $50 tool to test a 100 dollar problem, I would have skipped it. I don’t own a load tester - that Fluke, a correct wiring diagram and being good at measuring...



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