Jeep CJ 20 Gallon Fuel Tank Sending Unit Replacement
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- Опубліковано 6 вер 2024
- I think that my sending unit in the 20 Gallon gas tank is bad. I've tested all of my gauges and everything seems to check out, so it musts be the sending unit, right? In this video we drop the fuel tank, pull all the hoses, replace and test the sending unit, test the ground wire, and finally reinstall it.
As a side note, the 20 Gallon poly tank was available as an option on the CJ7s from 1984-1986, but I may be wrong in that date range. The skid plate was not very well ventilated so most of them rusted through from the inside out.
MTS fuel sending unit: www.mtscompany....
Way to go man. Glad you were able to find it! And thank you for recording it, CG. One of my favorite things about these videos is your willingness to show your mistakes and share what you learned. Priceless!
Ha! You should see all the blooper reel things that I cut out. :)
Great video. I restored my 85 Cj7 that was the 1st vehicle I bought when I was 17 (I'm 43 now) My gauge stopped working and turns out my brass float was FULL of fuel. I put in a new sending unit and brass float and checked the fuel level on the gauge in relation to the tank BEFORE I put it back in when it was at half tank. Problem being that when I filled it up for the first time, the gauge stops at 3/4. For anyone doing this, there is a video I found after the fact from Crown Automotive on how to calibrate the sending unit, which I feel like I need to go back and do. Live and learn. Thanks for all of your videos, wish I would have documented more for my restore.
Documenting it is a full time job in itself. Believe me :)
After watching this, I checked the ground line, cleaned it up and the gas gauge started moving. Saved me a lot of effort dropping the tank
Well, I will chalk that up to a success!
Awesome video! I never knew I could add fuel capacity to my 78 cj7. When I do my EFI swap, I'm DEFINITELY doing this modification. Thanks again!!
Your challenge now is to find a tank and skid plate. :)
Once again a great and informative video! I just recently did this on my 84 CJ7 and yeah.. it's a pain. A couple things I would like to mention.. firstly, wear some shoes, my dude! Lol! Secondly, I realize you're working with relatively clean components there, but most others would not be so fortunate. Blow some compressed air around the sender unit before disassembly to prevent a lot of unwanted crud from falling into the fuel tank when you remove the big nut and lift it out.
I really enjoy your vids! They've helped inspire me immensely and get me off my butt to wrench on the Jeep.
Great builds, except for the shoes. Where’s the fun in not risking serious injury?
@@coolguy_CJ7 To be fair... I think I've worked a time or two around the ol' Jeep wearing sandals too. Stay safe, buddy!
So glad you did this! I had some questions about my 20 gallon this answered! I think it would be awesome if you did a walk around/in depth review of your 84 and the golden eagle! Love to see what everything will look like after the time and effort!
I’m rebuilding the engine on the 84 right now and once that is done, I plan on doing a “conclusion” video for both.
My 82 wagoneer has a removable access plate in the floor behind the rear seat that’s directly above the sending unit location on the top of the tank which will make this diagnosis extremely easy for me. Thanks for the video
If they did that for the CJs, it would've solved a ton of issues that we experience now.
Great video! I'm almost ready to get the tub back on, glad I watched this first. This will save me some future headaches. You should make a video that has some of the bloopers and outtakes.
That would be a whole channel by itself. :)
Great video on a common issue on the Jeeps. My fuel gauge always worked on my '80 CJ. After I pulled the body for restoration it did not work. Checked at gauge, bought new sending unit and did the painful install. I'm going to check that ground!
Please let me know what you find.
Nicely done Cool Guy, I’ve had the tank out of my CJ numerous times, what a pain.
If I had to do it again, I devise a way to put a lever and hinge system in place to make it fast and easy ;)
Every time I see this Golden Eagle makes me think what will my cj look like. Awesome resto!
You should do a video driving this car!
Very near future. Just need to find an OEM radio and I should have everything correct. Then I can do the full end show video of it.
Awesome!!! I'm about to drop the tank on my 77 cut would love to go with the 20 gallon plastic tank but it looks like I'll be sticking with the stock 15 gallon steel tank.
Finding the 20 gallon is a needle in a haystack. Nobody makes them. Have to get lucky and find one on FB.
Ground lines have been the gremlin in my rebuild on my '84 as well. Seems every time I make a change somewhere, I've got to go back and check grounds. I think AMC could have done a much better, more effective way of grounding our Jeeps. I sure didn't have these issues with my '93 YJ Wrangler.
Great video! keep up the hard work, it's MUCH appreciated.
Side note: Are flip-flops while working on your Jeep a Buckeye thing??? :)
Nope. Just a moron thing.
Fyi... Blind rivet nuts can be your best friend at times. Those carriage bolts... Pain in the butt. Install blind rivet nuts. Then you just have bolts to remove in the future. Me... I love fender nuts and blind rivets. Nice jeep.
This is a great idea. I’ve been meaning to try those things out and this would be a great place for them.
Great video!!!! Looking forward to putting a new sending unit in my tank…😬😬😬😬😬
“Looking forward to putting in a new sending unit…” are words said by no CJ owner, ever.
First, thank you for posting these videos. I have a `1979 CJ Quadratrac that I have raised from the dead. I am the second owner and purchased it in 1988. Unfortunately, the cam lobes flatten out over time, and I let it sit for a decade before I got it running again. It has been a journey especially since I let a shop do the engine swap. After fixing all the crap they messed up, it is now running again and gets me around pretty well. Now to this video, did you ever consider cutting the panel that is not embossed in the back and installing an access cover? When I put in a Sniper EFI, I took that route instead. This access cover allows me to monitor the sender seal, swap senders, or if I ever want an in tank fuel pump, I have a quicker way of installing this alternative pump. Just a thought, and I am very happy with the cover especially knowing first hand what a pain it is to drop the tank. I will be cleaning up the access panel a bit more so that it looks like it came with the original vehicle. I do not believe this sacrifices too much to the original design.
This sounds like something that a few have done to their CJs. I feel it’s a good idea only if you can’t find the root of the problem. I for one don’t want to cut a whole in an original tub that there is no true replacement for, but that’s just me being an OEM snob :)
Thank you cool guy! Very informative!!
Hey cool guy I rebuilding a 77 cj7 that came in well…. Pieces(and lack there of) it needs a fuel tank and I’m trying to find that style so I don’t have to do the roll over check valve but all I can find even I. The later model searches have the two hose attachment on the drivers side. Do you know where I can source that style with the valves on top?
Sorry it took me forever to respond. This type/style of gas tank and skid plate was only made in the last years of the the CJ7 (84-86) I believe. When the wannabe Wrangler came along, Chrysler changed up the gas tank. Unfortunately, to get a plug and play tank, you'll have to find one on eBay, FB marketplace, or reach out to Ray Moulton at DeadJeep.com. Best guy in the business. Let him know Cool Guy sent you. Sadly, he'll know who your referencing :)
How frustrating! Every project on my Jeep’s are always a hard to reach area. Lol especially anything underneath or behind dash or gas tank areas !! There so simple they’re difficult if that makes sense lol.
Did you have to cut The length on 1st sending unit pickup line too on 1st install,like you had to do on 2nd unit?
They are truly a labor of love, but there is an amazing cool factor that comes with not only the CJ but with the knowledge that you did it.
The structure of the filter tube for the first was different, in that it was bendable so cutting the tube wasn't necessary.
I chose to keep 15gal , with a poly tanks and Maxbuilt skid plate.
I just couldn’t pass it up for the price. Although I filled it up yesterday and it was quite painful :)
@@coolguy_CJ7 my issue with a 20 is the reduced ground clearance. This gets even worse on a Scrambler
O! H! Cool guy.
I! O!
Great Vid, do you know what 2 size fuel lines you used?
1/4” for tank to fuel pump, carb. 3/16” for return line. Here is a video on the routing of the lines: ua-cam.com/video/LtI4wiPqzRI/v-deo.html
🇺🇲💪
No sound
Do you mean that there isn’t any sound in the video? Seems ok to me…
@@coolguy_CJ7 yes
@@owenjohnson2808 are you getting sound from other videos on YT?
Hmmm. This is the only complaint that I’ve had for this video. Have you tried again in the past few days?
@@coolguy_CJ7 no
Thanks!
What gauge size are the ground and sending unit wire?
Send me an email at dellis6914@gmail.com and I’ll send you a full wiring diagram that tells you all the details.
@coolguy_CJ7 what type of screw do you use to attach the grounding wire from sending unit to the frame of the jeep? Thanks.
@@markfeuerherdt2338 simple stainless steel either #10 or # 12 screw. You want something that will bite into the steel with thick threads.
How frustrating! Every project on my Jeep’s are always a hard to reach area. Lol especially anything underneath or behind dash or gas tank areas !! There so simple they’re difficult if that makes sense lol.
Did you have to cut The length on 1st sending unit pickup line too on 1st install,like you had to do on 2nd unit?
It was a different filter that was pliable enough to bend. Same issue, different resolve.