fuel gauge

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C

Challenger

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could someone tell me what the ohms should read on fuel sender from empty to full on 69 dart thank you
 
Somebody else created this photo, it's the rear of one of the factory test tools

c-3826-jpg.jpg
 
Well... A gauge tester isn't a sender tester. It's quite possible that those yellow letters were added w/ms paint shop or photoshop. Oil and temp senders can go beyond the 80 <-> 10 ohms range too. So what applies to testing a gauge doesn't exactly apply to testing a sender. A fuel sender does have positive mechanical stops and should show more or less a 80 <-> 10 ohm range. It's not linear though so 1/2 isn't 35 ohms, it's 23 ohms. Yes those yellow letters are correct, added on or not.
For what its worth... 80 ohms should get no needle movement so testing all the way down there wouldn't be a test, only a question... "Is this thing on?".
About 73 ohms will get about the first hash mark on a 80 <-> 10 gauge.
 
RedFish said:
Well... A gauge tester isn't a sender tester. It's quite possible that those yellow letters were added w/ms paint shop or photoshop. Oil and temp senders can go beyond the 80 <-> 10 ohms range too. So what applies to testing a gauge doesn't exactly apply to testing a sender. A fuel sender does have positive mechanical stops and should show more or less a 80 <-> 10 ohm range. It's not linear though so 1/2 isn't 35 ohms, it's 23 ohms. Yes those yellow letters are correct, added on or not.
For what its worth... 80 ohms should get no needle movement so testing all the way down there wouldn't be a test, only a question... "Is this thing on?".
About 73 ohms will get about the first hash mark on a 80 <-> 10 gauge.
Click to expand...
thanks for the reply guys
 
69_340_GTS said:
Yeah, but who has a C-3826 tester on hand? :rolleyes:
Click to expand...

That was not the intent. It was to show the relationship of the three ohmic values. You can duplicate that with individual resistors, a big variable rheostat and accurate ohmeter, or an old gas sender

The tester does not test senders, it tests the gauges. But you can use that information in reverse
 
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