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-   -   Help! Fuel sending unit ohms emtpy full (http://www.wranglerforum.com/f118/help-fuel-sending-unit-ohms-emtpy-full-84101.html)

Blacksurt 03-10-2011 08:44 PM

Help! Fuel sending unit ohms emtpy full
 
Would anyone know the correct aftermarket fuel gauge that would work in a 98 TJ, it has a 4cyl if it matters. I am putting a SBC in and would like to change to aftermarket gauges. Specifically i need to know what is the ohm reading full and empty. Thanks.

Pyro8541 03-13-2011 01:17 PM

With float in up position, resistance should be 20 ohms. With float in down position, resistance should be 220 ohm

Blacksurt 03-13-2011 09:03 PM

Quote:

Originally Posted by Pyro8541 (Post 1114281)
With float in up position, resistance should be 20 ohms. With float in down position, resistance should be 220 ohm

Thanks, I think I will have to use a programmable fuel gauge. The closest I have been able to find is a 240/33.

Blacksurt 03-13-2011 09:34 PM

Just had a thought :facepalm:. I think a 20 ohm resistor in line might work. It would make the empty right on and the full would only be 7 ohms over. The empty is what I am most concerned about. Anyone have any thoughts on this?

Ctflyer 03-14-2011 08:57 PM

I just did a new complete guage cluster and the fuel was the biggest problem no one makes one for the TJ. I used custom Speedhut guages. The fuel is programable. Here is a link to them.
Kits Gauge, Speedhut Gauge Series by SpeedHut

Blacksurt 03-14-2011 09:11 PM

Quote:

Originally Posted by Ctflyer (Post 1117009)
I just did a new complete guage cluster and the fuel was the biggest problem no one makes one for the TJ. I used custom Speedhut guages. The fuel is programable. Here is a link to them.
Kits Gauge, Speedhut Gauge Series by SpeedHut

Very cool...Speedo is programmable also. Thanks for the info.

Ctflyer 03-14-2011 09:27 PM

2 Attachment(s)
Here is what I went with.

Blacksurt 03-14-2011 10:21 PM

Nice! Did you make the cluster plate?

Ctflyer 03-14-2011 10:55 PM

Yes. I disassembled the old one and made a plate to fit all of the new gauges.

jakie d 08-27-2013 12:32 PM

it's an old thread i know but i was wondering if anyone knew what the resistance should be for a 93 wrangler fuel sending unit from empty to full. im trying to install aftermarket gauges but the one i bought isn't reading right. thanks again.


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