plymouth71
The Moomobile
This may sound stupid but what is the best and most accurate way to calibrate a sending unit with the fuel gauge?I have never done this before and any help would be great,Thanks
Fuel sending unit
- Thread starter plymouth71
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green1
Well-Known Member
As long as it is Mopar 10 to 75 ohms, should be good. Nothing else will work.
I guess there are different ways to go about this. You could start with an MT tank, and bend/ adjust the sender to read on the MT mark. Then fill it so many gallons at a time to see what the gauge reads
I built myself the rough equivalent of the Ma sender substitution box, which gives you cold/ MT, 1/2 scale, and full/ hot readings when hooked in place of the senders. This checks that your gauges are correct. Sender resistances are same for temp/ fuel/ and optional oil
http://www.forabodiesonly.com/mopar/showthread.php?p=1808075
The big problem is that repop senders don't seem to have the proper resistance range of the originals.
I built myself the rough equivalent of the Ma sender substitution box, which gives you cold/ MT, 1/2 scale, and full/ hot readings when hooked in place of the senders. This checks that your gauges are correct. Sender resistances are same for temp/ fuel/ and optional oil
http://www.forabodiesonly.com/mopar/showthread.php?p=1808075
The big problem is that repop senders don't seem to have the proper resistance range of the originals.
Rocky_JS
'cuda
I set mine by bending the sender and had to bend it a lot. I replaced the fuel tank at the same time (16 gallon) used a 5 gallon can and put 4 gallons in it bent sender to make a 1/4 tank on gauge.
If I were do it again I would use 6 gallons to the 1/4 mark. right now empty is empty and full reads full for awhile at 6 gallons you would split the difference and have a reserve of 2 gallons at empty.
in an a-body the sender goes into the rear about halfway mark and at 1/4 tank you can remove without spilling out the tank, at a 1/2 tank it will spill out. you could use water as a cheap substitute but need to make sure you get it out before adding gas.
If I were do it again I would use 6 gallons to the 1/4 mark. right now empty is empty and full reads full for awhile at 6 gallons you would split the difference and have a reserve of 2 gallons at empty.
in an a-body the sender goes into the rear about halfway mark and at 1/4 tank you can remove without spilling out the tank, at a 1/2 tank it will spill out. you could use water as a cheap substitute but need to make sure you get it out before adding gas.
plymouth71
The Moomobile
Thanks everybody for all of your help and advice,turns out the sender was bad(thats what I get for ordering one from a local parts store)The gauge would read accurate from 1/2 tank up to full,but when the fuel level dropped below half a tank it would drop to empty.I decided to do order a high quality sender,if anybody has any suggestions I would really appreciate your input.I thought about year one,classic ind.
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