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Re: Does anyone make a fuel sender that works?? [Re: TJP] #3229118 04/25/24 12:26 PM 04/25/24 12:26 PM
Joined: Dec 2014 Posts: 5,839 ohio R ruderunner master
ruderunner master R Joined: Dec 2014 Posts: 5,839 ohio	Originally Posted by TJP [quote=ruderunner]Theory on why senders read full during a dry test vs actual use. We're adjusting the senders and assuming the float will reach the top of the tank. We're forgetting about air space above the fuel and the fact that the float won't touch the top of the tank in operation. If someone is in this process, try setting the float for an inch gap from the top of the tank. Why do you believe there is air space at the top of the tank? IF the filler neck on say a 68-70 Charger is full of fuel, how could there be an air space ? Whether the neck is full or not, there's still going to be air pockets in the tank. Even the vent lines aren't completely against the top of the tank. Either way, the test is simple enough to try. Last edited by ruderunner; 04/25/24 12:27 PM. Angry white pureblood male

Re: Does anyone make a fuel sender that works?? [Re: moparx] #3229120 04/25/24 12:51 PM 04/25/24 12:51 PM
Joined: Jan 2011 Posts: 15,893 Central Florida larrymopar360 Stud Muffin
larrymopar360 Stud Muffin Joined: Jan 2011 Posts: 15,893 Central Florida	Originally Posted by moparx "Why do you believe there is air space at the top of the tank? IF the filler neck on say a 68-70 Charger is full of fuel, how could there be an air space ?" i have screwed up filling up my charger till the fuel ran all over the quarter, and out the vent line [which dumps into the frame rail] making a real mess. i don't think there was any air that time. [sure stayed on full for long time.] however, that was tons of years ago, and i'm super careful these days filling it up. also, the mess was during the time i had the original tank and sender in it. I've had nothing but problems filling older cars with gas and the spill over. I don't know if it's in the design of newer pump nozzles or what, but now I put my ear down and listen for it getting full and stop manually. Facts are stubborn things.

Re: Does anyone make a fuel sender that works?? [Re: larrymopar360] #3229148 04/25/24 03:45 PM 04/25/24 03:45 PM
Joined: Jan 2003 Posts: 20,812 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,812 A collage of whims	It's the curse of the A-bodies - learned long ago to listen to the rising tide of gas...

Re: Does anyone make a fuel sender that works?? [Re: wingman] #3229225 04/25/24 09:49 PM 04/25/24 09:49 PM
Joined: Jan 2003 Posts: 15,401 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,401 Omaha Ne	Originally Posted by wingman Has anyone had success using a device like this inline to compensate for their incorrect aftermarket sender/factory gauge? I've heard from some that they work, and others that they do not. Basically an adjustable resistor I assume? https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/mode=prod/prd748.htm they do work if you're fairly close (within 1/4 tank). I've installed quite a few as it sure beats filling, emptying, tweaking the float arm and repeating with no gain. A bit of a PITA due the wiring etc. but less so than the mentioned circle jerk www.tandmautomotive-omaha.com

Re: Does anyone make a fuel sender that works?? [Re: TJP] #3232604 05/13/24 05:48 PM 05/13/24 05:48 PM
Joined: Aug 2006 Posts: 2,518 God's Country Maryland GODSCOUNTRY340 OP master
GODSCOUNTRY340 OP master Joined: Aug 2006 Posts: 2,518 God's Country Maryland	After weeks of messing with this I ended up buying a new Auto Meter fuel gauge and Auto Meter fuel bridge to try out (pic). Couldn't get the fuel bridge to work as it should so I hooked the gauge up directly to my sender. The gauge now reads the sender but it reads backwards, full when empty and empty when full. At least now I know when it's empty or full just have to remember it's backwards. I can live with that. Last edited by GODSCOUNTRY340; 05/14/24 01:02 PM. Reason: pics I love the smell of Deer guts in the morning, it smells like... VICTORY!

Re: Does anyone make a fuel sender that works?? [Re: GODSCOUNTRY340] #3232606 05/13/24 05:58 PM 05/13/24 05:58 PM
Joined: Jan 2003 Posts: 13,601 md M mopars4ever I Live Here
mopars4ever I Live Here M Joined: Jan 2003 Posts: 13,601 md	I use mopar filler neck grommets, lock rings and sending unit seals/gaskets. I tried aftermarket ones and I had a problem with sealing. The aftermarket lock rings are crap too.

Re: Does anyone make a fuel sender that works?? [Re: mopars4ever] #3233095 05/16/24 12:09 AM 05/16/24 12:09 AM
Joined: Aug 2009 Posts: 1,318 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,318 Ohio	Yep, they are thinner than the OEs. Joe

Re: Does anyone make a fuel sender that works?? [Re: jlatessa] #3233151 05/16/24 12:16 PM 05/16/24 12:16 PM
Joined: Sep 2003 Posts: 19,449 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,449 north of coder	i got a reproduction tank filler tube grommet from a reputable supplier [can't remember who though] for my charger, and although it fit my tank perfectly, i couldn't get the filler tube through it to save my life ! so i got another one from someone else, and it fit perfectly. may have been a genuine mopar item, but i can't remember.

Re: Does anyone make a fuel sender that works?? [Re: GODSCOUNTRY340] #3233244 05/16/24 11:14 PM 05/16/24 11:14 PM
Joined: Jan 2003 Posts: 15,401 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,401 Omaha Ne	Originally Posted by GODSCOUNTRY340 After weeks of messing with this I ended up buying a new Auto Meter fuel gauge and Auto Meter fuel bridge to try out (pic). Couldn't get the fuel bridge to work as it should so I hooked the gauge up directly to my sender. The gauge now reads the sender but it reads backwards, full when empty and empty when full. At least now I know when it's empty or full just have to remember it's backwards. I can live with that. Not sure how that's wired but typically a DC circuit will indicate backwards if the polarity is reversed. So you might want to double check the wiring www.tandmautomotive-omaha.com

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