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Fuel gauge ohm rating
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http://www.clubcobra.com/forums/all-cobra-talk/95692-fuel-gauge-ohm-rating.html)
| chas427fe |
03-22-2009 08:29 PM |
Fuel gauge ohm rating
I want to replace the fuel gauge that is in my car. How can I find out what ohm rating it is. I can't find anything on the gauge and have tried putting an ohm meter to the pickup, When I put the ohm meter to the pickup it bounced all over the place. Any suggestions or ideas or do I just need to replcae both the gauge and the pickup? Thanks, Chas
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| Dangerous Doug |
03-22-2009 10:45 PM |
ERA has a good write up that includes some stuff on fuel guages. Check out www.erareplicas.com and search for "Wiring Primer".
Changes are, your fuel guage IS an ohm meter---of sorts. It's measuring the resistance of your fuel level mechanism.
DD |
| Ronbo |
03-22-2009 11:19 PM |
As I recall 60 ohms was standard (GM) for most aftermarket gauge mfgs. (60 ohms empty) Ford used some goofy, non-linear, 25 - 80 ohms sender.
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| strictlypersonl |
03-23-2009 04:56 AM |
It would help if we knew what gauges you're using. But even among a single gauge manufacturer, there can be multiple range choices. First thing: If you disconnect the wire from the sender, does the gauge go to zero or full?
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| chas427fe |
03-23-2009 09:08 PM |
Thanks everybody for your replies. The gauge is a Faria which makes marine gauges. I went to their web site and could not find anything. When you disconnect the wire to the sender it goes to zero. I disconnected the second wire to measure ohms again. I don't know who is a bigger idiot me or the original builder. I didn't realize he did not use two nuts on each connection and spent the last half hour fishing the sender out of the tank. After fishing it out and checking it outside of the tank I got readings of 280 ohms at empty and 55 at full. Looking at Summit they have three available: 1: 240 empty and 33 full, 2: 0 empty and 90 full and 3: 16 empty and 158 full. It looks like the 240 to 33 is the closest to what I am getting off my meter. Chas
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| strictlypersonl |
03-24-2009 05:04 AM |
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| chas427fe |
03-24-2009 05:56 AM |
Stricklypersonl, thanks for the answer. I guess I need to get better at using google. Chas
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| strictlypersonl |
03-24-2009 07:00 PM |
One hint for searching:
You can search a single site (without going into the advanced options) by typing
site:faria-instruments.com
in the search box.
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| chas427fe |
03-24-2009 07:13 PM |
Thanks for the suggestions.
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