RMarine
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| posted on 18/6/10 at 10:13 AM |
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fuel sender / gauge problems
Hi, I have a Koso RX2n+ and a CBS fuel sender and i can’t seem to get the two working properly. In the setting menu, you have 2 settings “100” and
“510” on 100 it says the tank is near empty when it's full and when it on 510 it's say it’s only ¾ full when it full. Can anyone
help??????
[Edited on 18/6/10 by RMarine]
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turbodisplay
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| posted on 18/6/10 at 10:24 AM |
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I would say you could have a 300 ohm sender. What are the results when empty, it might be possible to adjust the output using 2 resistors.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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RMarine
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| posted on 18/6/10 at 10:30 AM |
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on the 510 setting, when the tank is empty it reads empty.
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BenB
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| posted on 18/6/10 at 11:14 AM |
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I think your fuel sender and your dash are not a match made in heaven 
Personally as long as it reads empty when you're empty I'd stick with the 510 ohm setting.
You could change the fuel sender but it's a pain. you can add resistors so that it'll read full when it's full but then it'll
read 1/4 full when its empty. Having driven a car which ran out of petrol when the dial read 1/4 full I can confirm it's rather annoying. I
personally wouldn't care if the dial reads 3/4 full when the tanks brimmed.
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Rosco
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| posted on 18/6/10 at 11:22 AM |
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I'm strugglig with the same problem. I think most car sender are about 260ohms and work in the opposite direction to the Rx2n. I don't
know about the CBS sender but I think with an arm type that you could bend the arm through 90degrees and get it to opperate in the opposite direction.
In terms of the range you could put a resister in parallel and use the 100ohm setting on the Rx2n. The full and empty would be OK but it would not
be linnear.
For a 260ohm sender you'd need a 160ohm resistor in parallel to give 100 ohms.
Another alternative would be to get the sender off a bike.
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austin man
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| posted on 18/6/10 at 11:30 AM |
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try bending the arm on the sender it may not be floating to the top or it could be resticted.
Have you teis with the sender out of the tank and manually raised the floa to see whether you get te same reading. My sender had to be cut down as it
was too long preventing it registering when full
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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snapper
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| posted on 18/6/10 at 04:39 PM |
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On the old ford arm senders you can unsolder the wire from the reostat and solder to the other end swapping the out put so it reads the right way on
the guage, however the range is still wrong so I read 1/4 full when empty
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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RK
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| posted on 18/6/10 at 04:40 PM |
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From what I've seen, that is a very minor problem. My sender is installed backwards and my tank removal to change it requires taking the whole
back end off the car. I am happy with FULL tank = 0 on the gauge, and EMPTY tank = full on the gauge. Hey, it's a quirky car to begin with.
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