In a previous video https://youtu.be/RIRjwEgIwoo I had a look at a 2012 Ram 2500 with a few EVAP codes (P0456 and P0457) and the constant flashing of the "check fuel cap." We found out that the ESIM switch was bad as well as the pigtail. Napa brought us a new one and it is time to find out if that is all of the issues or not.
-Enjoy!
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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.

98 thoughts on “Hemi ram 2500 the dreaded check the fuel cap light – the fix kind of”
  1. Avataaar/Circle Created with python_avatars mitch highlander says:

    Echlin parts are purchased from a dealer network and should be original equipment parts.

  2. Avataaar/Circle Created with python_avatars Mike S says:

    jb weld on both sides

  3. Avataaar/Circle Created with python_avatars Emil Bratten says:

    Great find on the hole

  4. Avataaar/Circle Created with python_avatars bignut4567 says:

    That syl-glide does look like a pretty handy rubber lube to keep around the old bedroom, I mean shop.

  5. Avataaar/Circle Created with python_avatars Clyde Wayne Barley says:

    JB weld and done!

  6. Avataaar/Circle Created with python_avatars Teri and TL Stanbro says:

    This guy needs a mudflap in front of the tire

  7. Avataaar/Circle Created with python_avatars vwwrenchie says:

    A smokin' gun…or at least a filler neck!!

  8. Avataaar/Circle Created with python_avatars Robert Hance says:

    Flex seal it & call it a day ..

  9. Avataaar/Circle Created with python_avatars Sarah Hays says:

    Good to see you saving a Mopar …

  10. Avataaar/Circle Created with python_avatars John Lenoir says:

    I love the video that was quite something else with a dang Russo on top of that filler neck wow

  11. Avataaar/Circle Created with python_avatars jfolklfd10946 says:

    The rain and thunder in the background were so relaxing.

  12. Avataaar/Circle Created with python_avatars Andrew Baruth says:

    Oh Eric, just weld up the rust hole! LOL

  13. Avataaar/Circle Created with python_avatars Highstranger951 says:

    People would be surprised just how many different butt connectors are available. My distributor’s catalog has 6 pages of them to choose from. I personally like the nylon over the pvc jackets. Looks way more professional. I keep all four sizes in standard and epoxy filled heat shrink. I keep step-down butts in both varieties as well. Thanks for the great content Mr. O!

  14. Avataaar/Circle Created with python_avatars Michael O says:

    Eric Chrysler don't use the fuel pressure sensor because like most things Chrysler, they're unreliable! 🤭

    Edit: A blob of JB Weld for the fix?

  15. Avataaar/Circle Created with python_avatars Jose rocha says:

    You know Mr O is a real mechanic when he says that hes gonna fix the issue but its gonna still broke , and he was dead nutz right … The leak was still there , great job Mr O 👏👌

  16. Avataaar/Circle Created with python_avatars Bill Lowe says:

    Blowin smoke up your special heat stink blue butt connectors.

  17. Avataaar/Circle Created with python_avatars Michael Schmitz says:

    You should change your sign off to "If you can't do it, I probably can" 🤣

  18. Avataaar/Circle Created with python_avatars Alesky Finis says:

    Great work

  19. Avataaar/Circle Created with python_avatars Jack Sigler says:

    Wow, Thanks for sharing how a master figures all that out.

  20. Avataaar/Circle Created with python_avatars Dale Dohlman says:

    Really enjoy your videos but we really need your rain in s.e. Iowa

  21. Avataaar/Circle Created with python_avatars Steve Palenicek says:

    Eric o what it is bro

  22. Avataaar/Circle Created with python_avatars SilentServiceCode says:

    I am JB-Welding that hole.

  23. Avataaar/Circle Created with python_avatars Jesse Shelbourn says:

    🎶 As the thunder rolls and the lighting strikes 🎶

  24. Avataaar/Circle Created with python_avatars Kenneth Freeman says:

    A little JB Weld and the old Dudge will be right as rain!

  25. Avataaar/Circle Created with python_avatars Jas K says:

    Thanks alot Eric & Vanessa O

  26. Avataaar/Circle Created with python_avatars CLMDADE says:

    Little bit of jb weld and keep it moving…. at least temporarily.

  27. Avataaar/Circle Created with python_avatars Bob Reikowski says:

    You should go check on the neighbor. Have not heard the leaf blower running lately. I know it’s raining crazy, but that never stopped him before.

  28. Avataaar/Circle Created with python_avatars JoeyLovesTrains says:

    Count yourselves lucky on getting some random pop up thunderstorms.. around me, we’ve gotten barely any measurable rain, and most of our grass is simply dead and brown… I’m in southern Plymouth Massachusetts

  29. Avataaar/Circle Created with python_avatars Rob Peabo says:

    Eric, you are working in real time, hindsight comes after the fact. The fact are the switch was faulty, you fixed it it, then moved on to the next thing. You said in part one that there may be an another issue, turns out there was. Nothing wrong with your process. a rust hole is unfortunate, especially when there may not me an OEM direct replacement if the fuel inlet was hobbled from something else.

  30. Avataaar/Circle Created with python_avatars Thatdave says:

    Oh,I was getting excited that you were going to shove the welder tip into the fuel cap hole and weld the rusty leak shut 😛😛😛😛😛😛 excitement in your day !
    Wonder why it's rusting out ,is the cap housing holding water around it ???If he is a farmer,then the build up of animal poo might be adding to the issue

  31. Avataaar/Circle Created with python_avatars Michel Swerissen says:

    A hole in the filler neck, well there's your problem, well done sir well done.

  32. Avataaar/Circle Created with python_avatars C.L Carrillo says:

    I always call them marine grade butt connectors

  33. Avataaar/Circle Created with python_avatars c0mputer says:

    Weld that up in situ, call it a day.

  34. Avataaar/Circle Created with python_avatars brewski118sempire says:

    From my understanding of connections and wiring harnesses in general is that they are more expensive because there are additional licenses the manufacturer has to play for because most connectors are designed by a third party.

  35. Avataaar/Circle Created with python_avatars Matt P says:

    Blowing smoke up your GAS. 😜

  36. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Wow nice find on that small hole behind the Gas cap Eric O good Video as always @SouthMainAutoRepairLLC

  37. Avataaar/Circle Created with python_avatars calholli says:

    I'd probably smudge some JB-weld on the outside of that hole there after hitting it with a little wire wheel and call it good enough. It's just a work truck and not worth taking all that stuff apart. Another thing you could do if you were brave enough if wrap a string around a wet towel and shove it in the filler– and wipe everything down and blow it off real good with the air hose to make sure there were no fumes—- and zap that little hole with a mig welder right there in it's place……….. I'd be using the JB-weld myself.

  38. Avataaar/Circle Created with python_avatars Keith Aguirri says:

    Huuummm 🤔 Alrighty then… Guess we'll never know what happened. Did ya like that guilt trip Eric 😂.. Closure.. gotta have closure man. Oh well…. Just kidding brother 😁 Don't get your feathers all ruffled 😂. Hey… NAPA called.. they said your sponsorship is ready… Lol.

  39. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Connectors are exspensive compared to switches Never understood that and toyota sells the plug seperate of the wires which can get even more exspensive Eric O nice that napa supplies the entire pig tail in one peice @SouthMainAutoRepairLLC

  40. Avataaar/Circle Created with python_avatars RP Smith says:

    I learned a bunch! Thanks!

  41. Avataaar/Circle Created with python_avatars Rick Ptak says:

    Another one for the “Avoca Smoka” playlist!

  42. Avataaar/Circle Created with python_avatars Buff Barnaby says:

    You won't have that repair on electric ones. 🤣

  43. Avataaar/Circle Created with python_avatars jeff marshall says:

    Is that rain that I hear? We don't get that here in Texas anymore. Love the video.

  44. Avataaar/Circle Created with python_avatars Melvin Jones says:

    another patch job that went wrong. Oh well you can fix it. Fix it with J B Weld. or old bubble gum.

  45. Avataaar/Circle Created with python_avatars Richard M says:

    Eric it sound like it raining if so I am glad you getting you get rain

  46. Avataaar/Circle Created with python_avatars Clifford Sandefur says:

    Is there a part 3 ?

  47. Avataaar/Circle Created with python_avatars irgski says:

    Connectors are so expensive because there’s a monopoly between the connector manufacturers and the auto manufacturers.

  48. Avataaar/Circle Created with python_avatars Philip Mackin says:

    JB Weld, clean hole, fill hole. Done

  49. Avataaar/Circle Created with python_avatars Benjamin Stockton says:

    Awesome as always Eric O. Appreciate it buddy 👍

  50. Avataaar/Circle Created with python_avatars Pat Jago says:

    ❄️❄️❄️❄️❄️😎 about as cool as I can get

  51. Avataaar/Circle Created with python_avatars Don Gamble says:

    Like these vids. Thanks fer postin'.

  52. Avataaar/Circle Created with python_avatars Richard Bambenek says:

    The great state of New York where rust never sleeps.

  53. Avataaar/Circle Created with python_avatars Pragmatic Pragmatic says:

    Come on using hand emery cloth the clean the fuel filler break out the power grinder and go to town an clean it right.
    Safety Last😀

  54. Avataaar/Circle Created with python_avatars Boris The German says:

    Chrysler dodge the hoses to the plastic box thingy majiggy lmao starts cracking and the finger clamps break all cause leak codes. Simple fix so don’t think you can’t dyi it yourself. A squeeze and visible look can solve your leak.

  55. Avataaar/Circle Created with python_avatars Gremlin says:

    Hey I was trying to figure out who you looked like. Watch the movie Tremors You look like Michael Gross

  56. Avataaar/Circle Created with python_avatars Robert Roberts says:

    Send the rain to Texas. We need it !!!

  57. Avataaar/Circle Created with python_avatars George says:

    I can imagine someone trying to melt the standard butt connectors, 😂 plastic is not the same material as those heat shrink ones lol

  58. Avataaar/Circle Created with python_avatars springfield45 says:

    Glad to see you get some rain.

  59. Avataaar/Circle Created with python_avatars Bobby Bentley says:

    JB weld is the cheapest fix

  60. Avataaar/Circle Created with python_avatars Dan's Learning Curve says:

    Hindsight is much better than perfect vision! 20-15!
    Pay no attention to the car in my profile picture.

  61. Avataaar/Circle Created with python_avatars Jess Treloar says:

    Hot days also, 95 degrees at 70 MPH is still 95 degrees.

  62. Avataaar/Circle Created with python_avatars Iain Kinsella says:

    That filler neck got hit with an Atlas

  63. Avataaar/Circle Created with python_avatars Blake says:

    I'd smeared some steel epoxy on that filler neck just to see if it had anymore leaks.

  64. Avataaar/Circle Created with python_avatars Jim Sutton says:

    Cant polish a turd… nice work!

  65. Avataaar/Circle Created with python_avatars Brian G says:

    Smear some Epoxy on the back of that cap and call it a day!

  66. Avataaar/Circle Created with python_avatars parteibonza says:

    Time to bring out the Avoca Smoka!

  67. Avataaar/Circle Created with python_avatars homie789 says:

    Why look for a new filler? Why not remove and weld it from the outside? It just has to hold limited vacuum

  68. Avataaar/Circle Created with python_avatars tube-dude says:

    If it plugs in either way, then, NO, it doesn't matter.

  69. Avataaar/Circle Created with python_avatars Les Reeves says:

    Could you find a filler neck at the scrappies & cut it it fit or would they be as badly rusted ? Still good detective work to find the rusty neck lucky you got good ole smokey .

  70. Avataaar/Circle Created with python_avatars William Schubot says:

    A company truck I drove years ago an 1987 c350 that the filler neck wasn't replaced or extended for the stake side bed had to crawl under the truck n lift the filler neck up to fill it couldn't fill fast as it would back up

  71. Avataaar/Circle Created with python_avatars BIG TD says:

    Do you ever work on volvo s40 2.5 need some help press in wheel hud assembly. Thanks man

  72. Avataaar/Circle Created with python_avatars Milwaukee Road Jim says:

    No one ever said: Rust is my friend

  73. Avataaar/Circle Created with python_avatars Richard Warnock says:

    Road trash Juicey Juice accumulation look at back Cab Electrailises ate a hole 🕳 lot !!! Doing the Filler Neck Dance 💃 🤪

  74. Avataaar/Circle Created with python_avatars Gone sideways says:

    Connector have two bbls. wire bbl.and insulation bbl. most people only crimp wire bbl. but if you crimp insulation bbl. it takes stress off wire and makes connection stronger. JB weld on filler neck it will last forever!!!!!!!!!

  75. Avataaar/Circle Created with python_avatars Phil H says:

    Not a mechanic but I've always known I need to have rubber lube around. 😆

  76. Avataaar/Circle Created with python_avatars Thomas Jefferson says:

    Yes, that was a giggity. Oh wait, wrong channel.

  77. Avataaar/Circle Created with python_avatars Globalists Are Traitor Scum says:

    Lubin' the 'ol hole. NICE!

  78. Avataaar/Circle Created with python_avatars Rich T says:

    The best knowledge only partially comes from books. That's why this channel is fascinating and valuable.

  79. Avataaar/Circle Created with python_avatars Bigtruck57 H, says:

    PRNY- Advanced auto depreciation zone. Great diag and repair video as usual Eric O. Thanks for the content. Greetings from Lake City 🇺🇸🌴😎

  80. Avataaar/Circle Created with python_avatars craig smyth says:

    I used to count Mississippi’s, thanks to SMA I use Pennsylvania’s😂 You make the diagnosis look easy by following the process. I’ve learned a lot. Keep it Mr O!

  81. Avataaar/Circle Created with python_avatars Puder McGavin says:

    Yah to the sound of rain and thunder in the background

  82. Avataaar/Circle Created with python_avatars john desaavedra says:

    I'm a troubleshooter by nature and when you find an obvious broken part you have to fix it to continue. If you had found the rust hole in the filler tube you would still be looking for the failed connector and valve. That neck is exposed to the blast from the unshielded wheel and a temporary fix will ultimately fail again, and possibly contaminate the fuel system with road dirt and water.

  83. Avataaar/Circle Created with python_avatars BigLoo says:

    JB Weld?

  84. Avataaar/Circle Created with python_avatars Phil G says:

    That holey filler neck is just begging for some JB Weld if you ask me. Probably not something you could do being the professional you are but that would definitely be my fix for that.

  85. Avataaar/Circle Created with python_avatars xoxo2008oxox says:

    A rust hole! All that work and … ya solved it…again! Bet its galvanic corrosion on the filler neck!

  86. Avataaar/Circle Created with python_avatars Andy Guest says:

    Being such a small hole could you not have put a spot of JB weld in it or something similar safe for use with fuel?

  87. Avataaar/Circle Created with python_avatars Tony Fox says:

    Great , easy to follow normal kinda guy. Thanks

  88. Avataaar/Circle Created with python_avatars Glenn Hamblin says:

    Ok, so clean up the hole in the filler tube and apply some JB weld or your favorite epoxy and ship it?

    Also why don't you load those connectors that are exposed to the environment with some dielectric grease to prevent corrosion? It works well.

  89. Avataaar/Circle Created with python_avatars J T says:

    If it's not today, it would have been tomorrow as that pigtail would have failed then with the green crusties.

    Great job master technician!

  90. Avataaar/Circle Created with python_avatars Tyler Williams says:

    very nice info with using the scantool in the drivers seat! i cant wait to use that to my advantage! when i smoke test i really like hooking the smoke right to the port on the ESIM that connects to the fresh air filter. then you dont have to mess with any lines and accidently seal/ fix where the leak may be.

  91. Avataaar/Circle Created with python_avatars Hola! Goodsnout says:

    I'd patch the hole with a small dab of epoxy putty. Might work, worth a try.

  92. Avataaar/Circle Created with python_avatars Dave Gottler says:

    I have been watching your channel for quite awhile..have never left a comment so this is a first.Your honesty and integrity shows that there are mechanics out there that really do care and do quality work.I do most of my own repairs and have picked up so many tips from your videos .love the family too

  93. Avataaar/Circle Created with python_avatars canalboating says:

    Brilliant thunderstorm in the background

  94. Avataaar/Circle Created with python_avatars CASKET BLACK says:

    Rainman RAY, Eric O, Scotty Kilmer, VGG, CLEETUS, PUDDIN and 1320 some of the best Americans! in all of youtube auto issues! NEUTRAL DROP!!!!

  95. Avataaar/Circle Created with python_avatars Jerr OH says:

    My Ram diesel had a leak that stumped me for a while until I finally located it on the top of my fuel sending unit which had rusted thru. I put a draw straw in and a few months later another leak. This time it was in the fuel neck which was rusted almost the entire length. I lived in Michigan at the time and drove to work in the winter at 4 to 5 am, the same time as the salt trucks were dropping salt over the night before snow causing a nasty salty slush that got into everything.

  96. Avataaar/Circle Created with python_avatars David Shellhaas says:

    Great video and info. Thanks

  97. Avataaar/Circle Created with python_avatars Nunya Bidness says:

    I had to rewind and rewatch a few times just to listen to the rain. Living in the desert, I miss the rain but not the rust.

  98. Avataaar/Circle Created with python_avatars Rithius3485 says:

    Slow in the shop this time of the year? You are just bring the videos out like hot cakes!! Thanks Eric! ❤

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