Accuracy of aeromotive sending unit

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Backally

Backally

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Upgraded to efi, got a Aeromotive 18344 fuel tank/pump/sending unit. I know other aftermarket sending units don’t read accurate at the gauge. I haven’t run much through mine yet, but after putting about 10 gallons in it barely reads more than empty. Is that others experience with the Aeromotive sending unit?
 
I have the same set up. 1/2 tank is showing empty. I’m actually planning on dropping the tank back out. Somewhere I had found that the arm on the sending unit is adjustable and I’m thinking I can get it a bit more accurate.
http://www.tanksinc.com/pdf/Fuel_Level_Sender_Installation_Rev_1_5_15.pdf

The sender and tank are available from tanks inc and I believe aeromotive just installs their pump. My tank has tanks inc stamped into it.
 
superchargeddrt said:
I have the Tanks Inc setup as well. Thanks sending unit is less than accurate as well even when you painstakingly check that it's adjusted correctly. I am thinking about ordering one of these to make the job easier.

www.technoversions.com/MeterMatchHome.html
Click to expand...


Yea, that may be the way to go. I was hoping this would be at least a little closer but doesn't appear to be.
Thanks
 
Backally said:
Yea, that may be the way to go. I was hoping this would be at least a little closer but doesn't appear to be.
Thanks
Click to expand...
Yeah if I have the choice of removing the sending unit and playing around with the adjustment or connecting a couple of wires, I going with the wire option, at least I'll know it's accurate.
 
Dubob said:
I have the same set up. 1/2 tank is showing empty. I’m actually planning on dropping the tank back out. Somewhere I had found that the arm on the sending unit is adjustable and I’m thinking I can get it a bit more accurate.
http://www.tanksinc.com/pdf/Fuel_Level_Sender_Installation_Rev_1_5_15.pdf

The sender and tank are available from tanks inc and I believe aeromotive just installs their pump. My tank has tanks inc stamped into it.
Click to expand...

Would be interested to know if this works
 
I'm using the meter match with an aftermarket sender. The sender also read empty and had @ 8 gal. of gas left in the tank. After installing the meter match and setting it up correctly it seems to be working well. I drained the tank buy hooking an elect. pump to the sending unit and let it run till it could pull any more gas out. Then I added 1 Gal and set the empty or first point there. I then added 6 gal and set the point to between 1/4 and 1/2 on the gauge as my second point. Then added 6 gal more and set the third point to between 1/2 and 3/4. Then I filled the tank and set the forth point to where the needle read full on the gauge. So Far it has been working well on my 72 Demon with an 18 gal. tank.

Good Luck!
Tom
 
Ok finally got some time to mess with the tanks inc sending unit. With a half a tank of fuel left my gauge would show empty. I dropped the tank out of the car today and ran some electrical jumpers from the sending unit to the cars sending unit connection along with a dedicated ground for the sending unit. I started with measuring the tank depth divided that by 2 and used this to home in on roughly half a tank. I measured from the sending unit mount gasket and used 4". This got me close at a half a tank. My biggest concern is the big "E". I had to mess with the sender by moving the rheostat up and down on the bracket as well as adjusting the length of the float arm. It is much better now. I set it up to when it indicates empty I have a reserve of about an 1/8th tank. The only issue is it will hang at full longer. I tied into the car this way because I figured due to variances in wiring etc I could fudge that out some. I have just at a 1/4 tank and my gauge now indicates a smidge under a 1/4. I also adjusted the tabs at the bottom of the rheostat housing to prevent the arm from over traveling. As far as the instructions from Tanks inc on the sender their dimensions didn't even get me close. This isn't a fault on their part I don't think, I just believe its inherent to the electrical in these old cars. I am also using a digital 5v voltage regulator on the cluster. So as I stated each car will have some variances in the system I believe. The meter match may be an easier approach but I kind of like to tinker with what I've got to see what I can make work. Hope this helps out some.
 
enough chit chat
 
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Really didn’t consider actual volume. But I did concern myself with the lower ranges. There was a reason most people carried a gas can years ago.
 
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