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Relationship between fuel tank floater and resistance in ohms

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Old 07-21-2005, 08:53 AM
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Default Relationship between fuel tank floater and resistance in ohms

Hello-

For my EG fuel tank floater, it measures 2-5 ohms when full and 150-155 ohms when empty.

Does anyone know offhand if the relationship between fuel level and resistance is linear?

In other words, is it safe to assume since 2-5 is full and 150-155 is empty, then halfway must be ~75 ohms?

Thanks!
Old 07-25-2005, 04:30 PM
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Default Re: Relationship between fuel tank floater and resistance in ohms (B18EG6)

nothing huh?
Old 07-25-2005, 04:38 PM
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Default Re: Relationship between fuel tank floater and resistance in ohms (B18EG6)

the manual says:
2-5 ohms full
25.5-39.5 half full
105-110 empty
so,it doesn't appear to be linear.
Chris
Old 07-25-2005, 05:34 PM
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Default Re: Relationship between fuel tank floater and resistance in ohms (TeamNextGenChris)

Thanks for the reply.

Are you consulting the Helms manual for a 92-95 civic? Or did you look at a Helms for a teg?

The only strictly civic manual I have is haynes, and those are the only numbers it gave me (i.e. full and empty resistence)

Old 07-26-2005, 04:01 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (B18EG6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18EG6 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the reply.

Are you consulting the Helms manual for a 92-95 civic? Or did you look at a Helms for a teg?

The only strictly civic manual I have is haynes, and those are the only numbers it gave me (i.e. full and empty resistence)

</TD></TR></TABLE>
that is from an Interga manual-it's all i have here.i can confirm that in a Civic manual today at the shop.
Chris
Old 07-26-2005, 07:33 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (TeamNextGenChris)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeamNextGenChris &raquo;</TD></TR><TR><TD CLASS="quote">the manual says:
2-5 ohms full
25.5-39.5 half full
105-110 empty
so,it doesn't appear to be linear.
Chris</TD></TR></TABLE>

Thats also what my 92-95 Civic service manual says too.
Old 07-26-2005, 07:47 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (B18EG6)

I'd find it hard to believe that the sweep of the fuel tank level sensor isn't linear...it should just be a potentiometer.

But since the fuel tank is shaped the way that it is, its volume doesn't change in a linear way.

What are you trying to do? Is there a problem with the level sender?
Old 07-26-2005, 09:08 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (nocturnaldragon)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nocturnaldragon &raquo;</TD></TR><TR><TD CLASS="quote">Thats also what my 92-95 Civic service manual says too.</TD></TR></TABLE>

Awesome, thanks. My teg Helms gives those values also, u consulted a civic Helms in confirming those values? Does that mean the tanks are shaped similiarly?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">I'd find it hard to believe that the sweep of the fuel tank level sensor isn't linear...it should just be a potentiometer.

But since the fuel tank is shaped the way that it is, its volume doesn't change in a linear way.

What are you trying to do? Is there a problem with the level sender?</TD></TR></TABLE>

Yeh I was figuring its a pot also... There is no problem with the level sender, I am redoing my gauge cluster and I was looking at aftermarket senders and what their values correspond to. I was going to use the stock sender with aftermarket gauges in the cluster. To avoid buying a different I was going to utilize the stock one.

So long as the resistence values match up to the correct fills, it would work correct?
Old 07-29-2005, 07:15 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (B18EG6)

I have a Honda Service manual not a helms so thats Direct OEM values.
Old 07-29-2005, 07:51 AM
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Default Re: Relationship between fuel tank floater and resistance in ohms (nocturnaldragon)

The difference between a Helms and Factory service manual is....??
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