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  1. #1
    TerryMason's Avatar
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    Cranks but won't start



    Well, I broke down and had to call a tow truck. My 05 TJ cranks but won't start. I drove about 1/4 mile to the bank, went in and tried to start it again in about 3 minutes.

    It will crank quickly, but not catch. It feels like it's not getting fuel.

    For codes it has a p045 and a p0161, but I think those are unrelated.

    I've checked the fuses, and swapped the fuel pump relay for the horn relay.

    Any ideas?
    Last edited by TerryMason; 05-25-2018 at 02:22 PM.

  2. #2
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    Re: Cranks but won't start

    After it was towed home I did some troubleshooting:

    -No sound from fuel pump when key is turned on
    -starting fluid in the intake causes it to run for two or three seconds.

    I'm thinking that it's the fuel pump. I see that rock auto will sell the fuel pump itself for $70, or I can get the whole assembly for $175. Any thoughts?

    I'm leaning towards the entire assembly, and trying to decide if I should do Bosch for $157 or Mopar for $193. It's not a job that I want to do twice.
    Last edited by TerryMason; 05-14-2018 at 06:42 PM.

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    Cranks but won't start

    Did you check all the fuses and relays? You should be able to swap the horn relay with the fuel pump relay. Then listen for the pump.
    Or did you run out of gas?


    For a ~$600 job would i skimp on parts? Hmmmm
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    Last edited by JPNinPA; 05-14-2018 at 07:05 PM.
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    Re: Cranks but won't start

    Quote Originally Posted by JPNinPA View Post
    Did you check all the fuses and relays? You should be able to swap the horn relay with the fuel pump relay. Then listen for the pump.
    Or did you run out of gas?


    For a ~$600 job would i skimp on parts? Hmmmm
    JPNinPA
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    3/4 tank of gas
    I did swap the horn and pump relay, and checked all the other fuses (behind glovebox and at PDC), they look good.
    Would you buy the pump itself for $50, or the entire assembly for $190? I don't want to skimp, but I don't want to be wasteful either.

    Thanks

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    Cranks but won't start

    Personally I'd buy the assembly. I know my float is bad. It sticks and has the dead spot when the tank is full. Plus it's showing signs of the check valve going by loosing prime.




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    JPNinPA

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    Last edited by JPNinPA; 05-15-2018 at 01:50 AM.
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    Re: Cranks but won't start

    Thanks. I bought the Mopar complete unit:
    https://www.amazon.com/Mopar-5161335.../dp/B009NUJ8QU

    It'll take a week to get here though. That should give me plenty of time to drain the tank (It's got 3/4 of a tank).

    I'll also get a chance to fix the problem where gas splashes out of the tank when filling up.

  7. #7
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    Re: Cranks but won't start

    Let me know how that gas filler works out. I have that issue but not all the time.


    JPNinPA
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  8. #8
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    Re: Cranks but won't start

    After some searching, I bought this:
    https://www.amazon.com/gp/product/B00GUCRISO/
    You're supposed to trim both ends, and replace your existing hose.

    I'll let you know if it works - I get gas splashing out every time I fill up.
    Last edited by TerryMason; 05-16-2018 at 11:59 AM.

  9. #9
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    Re: Cranks but won't start

    Well, I got the tank out, however I noticed that one of the fuel lines is broken. Anyone know what this plastic line is? It looks like a vent line.

    Sent from my [device_name] using Jeepz.com mobile app
    Last edited by TerryMason; 05-21-2018 at 07:23 AM.

  10. #10
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    Re: Cranks but won't start

    This is the line that's broken



    Sent from my [device_name] using Jeepz.com mobile app
    Last edited by TerryMason; 05-21-2018 at 09:07 AM.

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    Re: Cranks but won't start

    Look at the video I posted at app 6 min


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    JPNinPA

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    Re: Cranks but won't start

    So thatís the fuel return line?


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  13. #13
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    Re: Cranks but won't start

    $70 has one on order at the dealer. One end connects to a vent line that leads to the front of the Jeep, the other end (the one that has the T on it) connects to the charcoal canister and the tank itself).

    Here's what it looks like


    Attachment 23306

  14. #14
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    Re: Cranks but won't start

    Quote Originally Posted by TerryMason View Post
    $70 has one on order at the dealer. One end connects to a vent line that leads to the front of the Jeep, the other end (the one that has the T on it) connects to the charcoal canister and the tank itself).

    Here's what it looks like
    Good info, I think I might have mine routed different.


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    Last edited by TerryMason; 06-15-2018 at 01:18 PM.

  15. #15
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    Cranks but won't start

    Invalid attachment


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    Re: Cranks but won't start

    Crankshaft sensor? My 2002 Wrangler Sport wouldn't start like that (at my bank too) and it wound up being the crankshaft sensor. Easy to replace.

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    Re: Cranks but won't start

    Quote Originally Posted by TerryMason View Post
    $70 has one on order at the dealer. One end connects to a vent line that leads to the front of the Jeep, the other end (the one that has the T on it) connects to the charcoal canister and the tank itself).

    Here's what it looks like


    Attachment 23306
    That's where your p045? code is coming from.... It's an EVAP system code... The other code is for an O2 sensor heater
    05 Unlimited Rubicon, 04 WJ Overland, 78 CJ-7, 07 WK (wife's)
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    Re: Cranks but won't start

    Quote Originally Posted by TerryMason View Post
    This is the line that's broken



    Sent from my [device_name] using Jeepz.com mobile app
    Not sue about the hose but I was having a similar problem and I chased the problem till I found it was the coil. But I didn't have any codes. Good luck bud.

    Sent from my SM-J327T1 using Jeepz.com mobile app

  19. #19
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    Re: Cranks but won't start

    Well, I'm back on the road. It was indeed the fuel pump. I did a quick and dirty writeup here:
    https://www.jeepz.com/forum/engine/4...ight=fuel+pump (Replacing a Wrangler Fuel Pump)

    I also replaced my fuel tank hose with a GM hose that includes a flapper in it to prevent backsplash. That worked well.

  20. #20
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    Re: Cranks but won't start

    Congrats Terry, it's gratifying when we can figure it out for ourselves!
    Quick fixes are so named for how long they stay fixed.
    If you run out of gas, no matter which way you decide to push, the closest gas station will always be uphill and in the other direction. Corollary: The likelihood of running out increases when all of the nearby gas stations are closed.
    The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep.
    We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch).

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