Fuel Gauge |
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mtmodela
Member Joined: 02 Jan. 2018 Location: Auburn, Ca. Status: Offline Points: 5 |
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Posted: 02 Jan. 2018 at 6:04pm |
My fuel gauge quite working, I purchased a new gauge and sending unit. Once installed I noticed the gauge was reading between 1/2 and 1/4 when actually the tank was empty. after running out of gas I purchased another gauge and sending unit and it does the same thing. What am I doing wrong?
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Mike Ternus
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stude-a-willys
Member Joined: 02 Sep. 2014 Location: Conifer, CO, US Status: Offline Points: 133 |
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That is how mine works when it is running. Turn off the engine and the voltage drops to battery voltage instead of charge voltage and it is much closer to empty on the gauge = empty in the tank.
I ran out of gas once too while I figured that out.
My low fuel warning is when the needle stops bouncing around. The non-sparking copper tube I stick down the filler neck is 100% accurate at confirming the level at all times. |
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Studebaker re-powered CJ2a
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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Mike,
Which vendor did you purchase the gauge from?
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1- 1946 CJ2A
2- 1949 CJ3A |
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smfulle
Member Sponsor Member Joined: 16 Sep. 2010 Location: Ogden, Utah Status: Offline Points: 6123 |
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Seems like I remember the repop gauge I bought had an adjustment screw on the back.
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mtmodela
Member Joined: 02 Jan. 2018 Location: Auburn, Ca. Status: Offline Points: 5 |
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Kaiser Willys Auto Supply
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Mike Ternus
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Gil
Member Joined: 29 July 2016 Location: N.B.Canada. Status: Offline Points: 975 |
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Welcome aboard Mike,hope you find the problem with your fuel gauge.Do you have pictures of your jeep.We love pictures.
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1946 cj2a 59108
1998 Jeep Cherokee 2 doors 2016 Jeep Cherokee TrailHawk |
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Stev
Member Sponsor Member Joined: 27 July 2016 Location: Cincinnati Status: Offline Points: 2383 |
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Mike,
If you fill the tank up does the gauge read full? If it reads 1/2 to 1/4 when you get to empty - you might want to make sure the float is installed in an orientation that it does not get hung up on something in the tank (wall of the tank or the baffle). A non working gas gauge on a CJ2A is a pretty common issue. Some people us a stick as a gas gauge.
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Stev
1946 CJ2A Trail Jeep (The Saint), 1948 CJ2A Lefty Restored |
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63owner
Member Joined: 09 Jan. 2011 Location: Owensboro, Ky. Status: Offline Points: 472 |
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After getting tired of messing with the gauges on both of my Jeeps and never really trusting them, I purchased a "fuel gauge" from the local hardware store.
It's a 3/16 wooden dowel rod. When it reads at about 1 inch wet on the bottom of the rod, I add more gas. It has never let me down. |
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1948 CJ2A
1963 CJ3B Late 1940s(?) Spen trailer |
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mtmodela
Member Joined: 02 Jan. 2018 Location: Auburn, Ca. Status: Offline Points: 5 |
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Gauge does read full when tank is full. I replaced both the sending unit and gauge twice with new units and it still will run out of gas at a reading between 1/2 and 1/4. I also made sure the float is not rubbing on tank or a baffle. Help !!!
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Mike Ternus
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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Walck's sells a gauge that is adjustable. Kaiser sells the same adjustable gauge. It comes standard with a black bezel. They both have 3 posts and an access hole in the back where you can make adjustments. I have had bad luck with the recent Walck's version. ( Fuel level would rise as I accelerated. Never could get it to work right.)
Kaiser also sells a gauge (Made in the USA) that is like the original CJ2A 2-post gauge, but the bezel is Olive Drab and needs to be painted black of a 2A. If you have the 2 post gauge, then I would do what Stev suggests. It may be getting caught up...or you might need to bend the float arm at bit for the gauge to read correctly. If you have the Kaiser 3 post version, you may just need to adjust it to read correctly. Tim |
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1- 1946 CJ2A
2- 1949 CJ3A |
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berettajeep
Member Sponsor Member Joined: 03 Feb. 2009 Location: Astoria OR Status: Offline Points: 4304 |
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Mine has this too. Pain to try to adjust when it is in the dash. If I was a smarter human I would remove the gauge and the sending unit and have someone assist me in setting it. Think I'll do that since the fuel in my tank is close to a year old now, I'll drain that out. ( Mental note for me) |
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TERRY
Member Sponsor Member Joined: 22 May 2007 Location: BOULDER COLORADO Status: Offline Points: 3396 |
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You need to check operation of the gauge/sending unit on the bench to verify if it is a mechanical/float hang up or an electrical mismatch in the pair.
You are using a 6 or 12v gauge setup as needed for your jeep? Check this thread for resistance readings for stock gauge. https://www.thecj2apage.com/forums/fuel-level-sending-unit_topic5216.html AND https://www.thecj2apage.com/forums/why-doesnt-my-gas-gauge-work_topic17875.html Edited by TERRY - 02 Jan. 2018 at 10:13pm |
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BOULDER 48 2A
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mtmodela
Member Joined: 02 Jan. 2018 Location: Auburn, Ca. Status: Offline Points: 5 |
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After reading my posts from you allI called Kaiser-Willys asking them if the gauge I bought was ajustable to match the sending unit. They said it was and could be adjusted in the back of the gauge with a small screw driver. That will be my next step. Thanks to all who gave me information on this. It was very helpfull. It would have been nice if the gauge would of had instructions notifying the purchaser that the gauge could of been calibrated prior to installation. A bench test will be performed for sure.
Thanks again, Mike
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Mike Ternus
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ndnchf
Member Sponsor Member x 2 Joined: 22 Sep. 2017 Location: Virginia Status: Offline Points: 2177 |
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Did adjusting the gauge solve the probem? Curious minds want to know
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1948 CJ2A - It goes nowhere fast, but anywhere slow.
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LesBerg
Member Joined: 09 Apr. 2014 Location: Athol, ID Status: Offline Points: 1554 |
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it didn't on mine. I have the Walcks 12v version.
I have mine set to read full when the tank is full. When the gauge hits E, there's about three gallons left. I tried setting the gauge to 1/2 with exactly 5 gallons in the tank, and the results were mixed. It never read the same between fill-ups. |
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1948 CJ2A 157713 24" Stretch "Old Ironsides"
1st Armored Div 6th Infantry Reg 3rd Infantry Bn Headquarters Company #161 rubigo in quo speramus - "In Rust we Trust" |
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Qcanuck
Member Joined: 04 Sep. 2013 Location: Ottawa, ON Status: Offline Points: 421 |
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My fuel gauge is a 3 foot long, half inch oak dowel. It never lies.
The other one is just for show. QW
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Ol' Unreliable
Member Joined: 25 Sep. 2016 Location: CO Springs CO Status: Offline Points: 4226 |
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Half that length will not lie either. You can calibrate it if you want, too. I did that with my first Jeep. |
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There's a reason it's called Ol' Unreliable
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Phil_IA
Member Joined: 20 Aug. 2014 Location: Oskaloosa, Iowa Status: Offline Points: 94 |
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I calibrated my stick with a magic marker. Hasn't left me stranded yet.
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48 CJ2A "Squeaky" owned since 1978
2010 Grand S Limited 2000 XJ |
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